Upscaling can make a game run faster by rendering fewer pixels and reconstructing the image at your display resolution. The trade-off is not always the same: a low internal resolution or conservative reconstruction can look soft, while unstable temporal data can make foliage, wires and other fine detail shimmer, crawl or flicker in motion. Identify which symptom you have, then change the upscaler and quality mode before touching sharpening.
What game upscaling is doing
A game set to a 4K output may render its 3D scene at a lower internal resolution, then produce a 4K-sized final frame. Upscaling reconstructs missing detail instead of drawing every output pixel from the start. That reduces GPU work, but the reconstructed image depends on the source resolution, the algorithm and the information supplied by the game.
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The output resolution and the internal render resolution are separate settings. Your monitor may receive a 3840×2160 signal while the 3D scene is rendered substantially below that size. A quality preset is therefore more than a sharpness preference: it changes how much source information the scaler has available. A performance-focused mode can deliver a higher frame rate while leaving the algorithm with fewer pixels to analyze.
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Spatial upscaling
A spatial scaler works mainly from the current frame. It enlarges the lower-resolution image and may apply edge reconstruction and sharpening. Because it has little or no history from earlier frames, tiny details can change from frame to frame as their source pixels move across the lower-resolution grid. NVIDIA describes this behavior as temporal instability in spatial scaling.
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Spatial scaling can still look acceptable on broad surfaces and large objects. Its weakness is most visible on features that are only a few pixels wide at the internal resolution: distant branches, chain-link fences, telephone wires, hair and repeating patterns. As the camera moves, those features cover different parts of source pixels, so their reconstructed visibility can alternate.
Temporal reconstruction
Temporal methods combine the current lower-resolution frame with information accumulated from previous frames. They also use motion vectors to estimate where earlier pixels belong now. DLSS and XeSS-SR are examples of temporal approaches; Intel describes XeSS-SR as a temporally amortized upsampling technique. When the history and motion data are accurate, temporal reconstruction can preserve more detail than a purely spatial enlargement. When they are wrong or incomplete, the result may be ghosting, crawling edges or flicker.
History is not automatically correct. Newly exposed surfaces, transparent effects, particles and objects that move independently of the camera all require the engine to identify which earlier pixels are still useful. A temporal scaler can therefore be sharper than a spatial scaler in one scene and less stable in another. The game’s implementation matters as much as the brand name shown in the menu.
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| What you see | Likely meaning | First diagnostic |
|---|---|---|
| Everything looks soft, including large objects and textures | The internal render resolution or quality preset is too aggressive, or the reconstruction is intentionally restrained | Move from a performance-focused mode to the next higher-quality mode |
| Foliage, fences, wires or hair sparkle while the camera moves | Temporal instability or inadequate fine-detail reconstruction | Compare motion in another quality mode or another supported scaler |
| A trail follows a moving object | Ghosting caused by history, motion vectors or exposure information | Check for a newer game or driver version and compare a different upscaler |
| Edges look harsh immediately after enabling a scaler | Sharpening is too strong, not necessarily a reconstruction failure | Lower sharpening before changing other rendering features |
A paused screenshot can hide temporal problems. Evaluate the same scene while panning the camera, walking past thin geometry and following a moving character. A setting that looks crisp in a still image may shimmer in motion, while a slightly softer mode may remain more stable.
Also distinguish shimmer from ordinary animation or display behavior. Temporarily disable motion blur if it obscures the comparison, but do not use a single screenshot as proof that one mode is better. Check both a slow pan and normal gameplay, because some artifacts appear only when objects move quickly or become newly visible.
Fix upscaling blur or shimmer step by step
- Record the active rendering path. Open the game’s Graphics, Video or similarly named settings page. Note the output resolution, render scale or internal resolution, selected upscaler, quality preset and any sharpening slider. Some games expose an upscaler only after a compatible anti-aliasing option is selected.
- Confirm that the game is actually using the option you changed. Apply the setting, restart if the game requests it, and verify the displayed frame rate and image. Driver-level scaling can coexist with an in-game scaler, so make sure two different systems are not both resizing the image.
- Test a less aggressive quality preset. Select the next higher-quality mode rather than jumping straight to native rendering. The game will usually render at a higher internal resolution, giving the reconstruction more source detail. Compare movement, thin objects and distant texture detail at a similar camera position. This is a diagnostic trade-off: image stability may improve while frame rate falls.
- Adjust sharpening in small increments. If the image is soft but stable, raise sharpening slightly. If outlines, foliage or texture grain look brittle or sparkle after sharpening, lower it. NVIDIA documents sharpening controls for Image Scaling in supported games and GPU scaling/sharpening controls in its driver software. Sharpening can change edge contrast; it cannot recreate detail that was never rendered and cannot repair incorrect motion history.
- Compare another supported scaler. If the title offers DLSS, FSR, XeSS or a spatial option, compare them in the same scene with the same output resolution and a similar performance target. Options are not interchangeable in every game: support, presets and integration differ by title. Look at detail retention, moving fine detail, ghosting, softness and frame rate rather than assuming one vendor’s method always wins.
- Try native rendering as a control. Temporarily disable upscaling or use a 100% render scale if the game allows it. If the shimmer disappears at native resolution, the scaler or its inputs are implicated. If it remains, investigate the game’s anti-aliasing, texture filtering, display resolution or another rendering effect instead.
- Update the game and graphics driver. Install a driver that the GPU vendor identifies as appropriate for the game, and check the game’s patch notes or launcher for updates. Intel specifically recommends checking whether the installed driver is optimal for XeSS. NVIDIA says newer DLSS model presets can improve temporal stability and reduce ghosting in supported games and configurations; an update is not a guarantee for every title.
- Retest after changing one control. Use a repeatable scene and alter one setting at a time. Otherwise, it is easy to mistake a change in sharpening, anti-aliasing or motion blur for an improvement from the upscaler itself.
How each symptom points to a different setting
The whole image is blurry
Start with internal resolution and the quality preset. A performance-oriented mode may reconstruct the output from a very small source image. Moving one step toward quality generally supplies more pixels to the algorithm. Check whether the display itself is receiving the intended output resolution; an operating-system or driver scaling mode can add a second resize.
Next, inspect sharpening. Too little sharpening can leave a stable image looking dull, but increasing it aggressively produces bright halos and harsh texture contrast. Use the smallest adjustment that restores perceived edge definition. If large objects remain soft even with moderate sharpening, the limitation is probably the source resolution or reconstruction mode rather than the sharpening value.
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Texture quality and reconstruction quality are related but not identical. A texture setting controls source assets, while an upscaler controls how the rendered image reaches the output size. Do not assume increasing texture quality will fix blur caused by a very low internal resolution. Test the scaler and render scale first so you know which control changed the result.
Fine detail shimmers or crawls during movement
Thin geometry is difficult because it may occupy only part of a source pixel. As the camera moves, its coverage changes and the reconstructed result can alternate between visibility and disappearance. Spatial scaling is particularly vulnerable to this temporal instability. A higher-quality preset, a temporal option with better history or native rendering can reveal whether the scaler is responsible.
Do not judge this symptom from a static menu or screenshot. Test a fence, distant branches, roof wires, hair or patterned fabric while moving sideways. Compare the same object at identical output resolution and approximately equal frame rate.
If a quality increase reduces shimmer but does not eliminate it, that points to limited source detail or temporal behavior rather than a simple sharpness deficit. Lowering sharpening may make the artifact less conspicuous, but it does not correct the underlying visibility changes.
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Ghosting usually indicates that previous-frame information is being reused incorrectly. The reconstruction needs accurate motion vectors and a correct understanding of which pixels remain visible. A character moving in front of a newly exposed background, particles, transparencies and rapidly changing geometry are difficult cases.
Exposure also matters. Intel’s XeSS Super Resolution Developer Guide 2.0 states: “Correct exposure is essential to minimize ghosting of moving objects, blurriness, and precise brightness reconstruction.” That is an integration requirement for developers, not a promise that a consumer setting will remove ghosting in every game. If a title has no control for exposure or motion-vector quality, a patch may be the only complete fix.
Changing to a higher-quality mode can reduce the amount of reconstructed history needed, making trails less visible, but it cannot repair a vector that is missing or scaled incorrectly. Compare a moving character against a high-contrast background and check whether the trail follows the object, remains on the background or appears only during exposure changes.
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Shimmer appears only with one game
A title-specific problem points toward integration rather than a universal weakness in your GPU. Temporal methods depend on the game’s motion vectors, exposure, depth data and visibility handling. Incorrect scale, missing data or an interaction with the game’s anti-aliasing path can destabilize the result.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Intel advises developers to disable competing upscalers and TAA when enabling XeSS to reduce incompatibilities. Players may not be able to change those implementation details. If native rendering is clean but every upscaler in one game is unstable, report the exact game version, GPU, driver, output resolution, scaler and preset to the developer and watch for a game update.
Settings and compatibility checks
Before comparing algorithms, establish a clean baseline. Use one in-game scaler, one anti-aliasing path and the intended output resolution. If the menu offers separate render-scale, anti-aliasing and sharpening controls, write down their starting values. A competing temporal anti-aliasing or upscaling path can consume or replace the history that another scaler expects.
Check whether the game applies the setting immediately or only after a restart. Some titles expose an upscaler selection only when a compatible graphics API or anti-aliasing mode is active. If a control is greyed out, that may be a title limitation rather than a driver fault. A driver-level image-scaling feature should be treated as a separate test, not silently layered over the game’s own reconstruction.
Use the same display mode for every test. Switching between exclusive fullscreen, borderless mode and a desktop-scaled window can introduce another resize and make a comparison misleading. Keep output resolution, field of view, camera position and frame-rate cap consistent while changing the scaler.
Comparing DLSS, FSR, XeSS and spatial modes in a fair way
Vendor descriptions explain different mechanisms, but they do not establish a universal image-quality ranking. A fair comparison uses the game’s own implementations and the same workload.
| What to compare | How to test it | What a good result looks like |
|---|---|---|
| Detail retention | Inspect distant text, brickwork, foliage and texture patterns | Small features remain legible without excessive ringing |
| Motion stability | Pan slowly and quickly past fences, wires, leaves and hair | Fine detail does not repeatedly pop, crawl or sparkle |
| Ghosting | Track a moving character, vehicle or particle effect against a contrasting background | No persistent trail or smeared background |
| Sharpness | Look at object edges and high-frequency textures at normal play distance | Clear edges without halos or brittle noise |
| Performance | Use the same scene and frame-time measurement for each mode | The mode meets your frame-rate target without unacceptable artifacts |
| Compatibility | Check behavior with the game’s anti-aliasing, ray tracing and other reconstruction options | No duplicated scaling, disabled controls or new instability |
FSR support is normally selected through the supported game’s graphics or video menu, where AMD documents quality modes. DLSS, XeSS and spatial choices likewise depend on what the developer exposed. A mode available in one game may be absent, renamed or implemented differently in another, so compare the actual title rather than treating a label as a guaranteed specification.
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Keep a simple comparison record: mode, preset, output resolution, frame rate, and notes about foliage, wires, trails and edge halos. This prevents a visually impressive but slower mode from being mistaken for a better overall choice. The best setting is the one that meets your performance target while keeping motion artifacts acceptable.
Why motion vectors, exposure and history matter
A temporal upscaler cannot infer motion perfectly from color alone. The engine supplies motion vectors describing how scene elements moved between frames, along with depth and other buffers. The algorithm uses those inputs to reproject earlier detail. If a vector is missing, scaled incorrectly or applied to the wrong object, old pixels can appear in the wrong place. If exposure changes are not represented correctly, brightness and detail reconstruction can fluctuate.
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Changing the quality preset may reduce the visibility of these errors by supplying more current-frame detail, but it does not correct faulty integration. That is why two games running on the same GPU can show very different ghosting or shimmer with the same branded upscaler.
Developers also need to handle disocclusion: the moment when camera or object movement reveals pixels that were hidden in the previous frame. Those pixels have no trustworthy history and must be reconstructed from current data. Transparent surfaces, particle effects and animated materials create similar edge cases. Players generally cannot tune these inputs, so persistent artifacts in one title are useful evidence for a bug report rather than a reason to keep buying hardware.
A repeatable test procedure
- Choose a demanding, repeatable scene. Use an area containing foliage, thin geometry, a patterned surface and at least one moving object.
- Lock the output conditions. Keep output resolution, display mode, field of view and frame-rate cap unchanged.
- Start with native or 100% render scale. This provides a reference for whether the game itself has shimmer or ghosting without upscaling.
- Test one quality preset. Pan across the same objects at a slow speed, then repeat during normal movement.
- Record artifacts separately. Note softness, crawling detail, trails, halos and frame rate rather than assigning one overall “looks better” score.
- Change only one variable. Move to the next preset, another scaler or a small sharpening adjustment, then repeat the same path.
This procedure is more reliable than comparing screenshots taken from different locations. Temporal artifacts are defined by change over time, so motion and repeatability are essential.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Common mistakes that make the image worse
- Using the most aggressive performance mode automatically. It may render from a source resolution too low for the game’s thin geometry.
- Trying sharpening first. Sharpening changes contrast and can exaggerate shimmer; choose the scaler and internal resolution first.
- Judging only a paused screenshot. Temporal instability is a motion artifact.
- Changing several settings at once. You lose the ability to identify which control helped.
- Running two reconstruction paths. An in-game scaler combined with driver or display scaling can produce an additional soft resize.
- Assuming a driver update fixes every title. Updates can improve supported models, but motion-vector, exposure and compatibility errors may require a game patch.
- Buying hardware as a generic cure. The symptoms described here are usually controlled by game settings, drivers and integration. A new monitor, cable or graphics card is not a universal fix unless you have separately established a performance or display limitation.
- Comparing unequal workloads. A mode can appear cleaner simply because it is rendering fewer effects, a different resolution or a different frame rate. Match the scene and target before drawing conclusions.
A practical decision tree
- Is the entire frame soft? Raise the quality preset or render scale, then make a modest sharpening adjustment.
- Does only fine detail flicker in motion? Compare a temporal and spatial option, then test a higher-quality mode and native rendering.
- Do moving objects leave trails? Update the game and driver, compare another scaler, and treat persistent trails as an integration issue.
- Does native rendering also flicker? Investigate anti-aliasing, texture filtering, display scaling or the game’s own rendering effects rather than blaming upscaling.
- Is the problem confined to one title? Record the exact settings and report it to the developer; player-accessible controls may not correct bad motion vectors or exposure.
What to expect from a successful fix
A good result is not necessarily the sharpest still image. It is a stable image that preserves the detail you care about while meeting your frame-rate target. In practice, that often means choosing a less aggressive quality preset, reducing excessive sharpening and selecting the scaler that behaves best in that particular game. Keep native rendering as a reference, and judge every change in motion.
No purchase is required for this troubleshooting process. A graphics-card, monitor or cable upgrade may address a separately diagnosed performance or display limitation, but none is a general cure for bad reconstruction, incorrect motion vectors or poor exposure handling. Start with the controls already exposed by the game and driver.
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Frequently Asked Questions
Why does upscaling look blurry even at a high output resolution?
The output resolution can be high while the internal render resolution is low. Move from a performance-focused preset to a higher-quality mode, then adjust sharpening modestly. Sharpening cannot recreate detail that was never rendered.
Why does the image flicker only when I move the camera?
Motion reveals temporal instability. Fine geometry such as foliage, wires and fences can change coverage across low-resolution source pixels. Compare a higher-quality preset, another supported scaler and native rendering while panning through the same scene.
Can sharpening fix shimmer?
Usually not. Sharpening changes edge contrast and may make shimmer more obvious. Choose the scaler and internal resolution first, then use sharpening only for a small adjustment to a stable image.
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Ghosting leaves a trail or smeared region behind a moving object, while blur affects the image more uniformly. Track a character or vehicle against a contrasting background and compare native rendering or another scaler.
Should I use DLSS, FSR or XeSS?
There is no universal winner established by the vendor descriptions. Compare the implementations available in your game at the same output resolution and similar performance target, checking detail, motion stability, ghosting, sharpness and frame rate.
Will updating my graphics driver remove shimmering?
It may improve supported models or game configurations, and Intel recommends checking that the installed driver is optimal for XeSS. However, incorrect motion vectors, exposure or conflicting rendering paths may require a game update instead.
Why does one game shimmer while other games look fine?
Temporal upscaling depends on title-specific motion vectors, exposure, depth and visibility handling. A clean native image with unstable upscalers in one game points toward that game’s integration rather than a universal GPU problem.
Do I need a new monitor, cable or graphics card?
Not as a general remedy. First test render scale, quality mode, sharpening, another scaler, native rendering and current software. Consider hardware only if you separately identify a performance or display limitation.
The Bottom Line
First separate uniform softness from motion shimmer and ghosting. Confirm the active scaler and internal resolution, test a less aggressive quality preset, and adjust sharpening only after the reconstruction path is stable. Compare DLSS, FSR, XeSS, spatial scaling and native rendering in the same moving scene, with one change at a time. If artifacts remain isolated to one title, inaccurate motion vectors, exposure or competing anti-aliasing paths may require a developer fix rather than a new piece of hardware.
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