If a game hitches when you enter a new area or trigger an unfamiliar visual effect, shader compilation is a plausible cause. NVIDIA says shaders are commonly compiled while a game runs, and that process can produce gameplay stutter. Increasing the driver’s Shader Cache Size can prevent frequently reused shaders from being evicted, although it cannot fix every kind of hitch.
What the shader cache does
A shader is a small program that tells the GPU how to render an effect, material or lighting operation. Games may compile those programs the first time a particular scene or effect is encountered. NVIDIA describes shader compiles as a common cause of gameplay stuttering because compilation can happen during play.
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The graphics driver stores compiled shaders on disk. When the same game needs them again, it can reuse the stored versions instead of compiling them from scratch. The cache is therefore a reuse mechanism, not a frame-rate booster by itself.
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Change NVIDIA’s Shader Cache Size
- Open NVIDIA Control Panel.
- Choose Manage 3D settings.
- Find Shader Cache Size on the global settings page.
- Select a larger limit that fits your available disk space.
- Apply the change, restart the game and let the cache rebuild as you play.
NVIDIA exposes these choices:
| Shader Cache Size option | What it means |
|---|---|
| Disabled | No shader cache is retained. |
| 128 MB | A small fixed cache limit. |
| 256 MB | A fixed cache limit. |
| 512 MB | A fixed cache limit. |
| 1 GB | A fixed cache limit. |
| 5 GB | A larger fixed cache limit. |
| 10 GB | A high fixed cache limit for a typical game library. |
| 100 GB | A very high fixed cache limit for systems with substantial free space. |
| Unlimited | No driver-imposed size ceiling; disk capacity still limits what can be stored. |
Which value should you choose?
Use the largest practical option that does not put your system’s free space at risk. Moving from a very small limit to 10 GB, 100 GB or Unlimited is a reasonable application of NVIDIA’s documented choices, not a universal benchmarked fix. A limit that is too small can delete older shaders that a game still needs, forcing them to be compiled again and recreating the hitch.
Changing the limit does not instantly fill the cache with every shader in your library. The game must encounter shaders, compile them and store them. The first session after changing the setting can therefore still include compilation pauses; later runs may reuse the resulting files.
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Why stutter can return after a driver update
NVIDIA says installing a new graphics driver deletes the shader cache. The first launch after an update can consequently stutter while the game compiles its shaders again. That behavior does not necessarily mean the new driver is defective or that the cache-size change failed.
If cache files are corrupted, or if support troubleshooting calls for a clean rebuild, NVIDIA’s procedure is to delete the Shader Cache files and allow the game to recreate them at launch. Clearing the cache is a reset, not a permanent performance upgrade. Expect another compilation period after the deletion.
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AMD users have a different control
AMD documents Shader Cache as a feature that compiles and stores frequently used game shaders, reducing repeated regeneration and potentially lowering CPU work during loading. Its setting is AMD optimized by default.
The AMD documentation does not present the same numeric cache-size menu listed for NVIDIA. Do not assume that an AMD system has an equivalent 10 GB, 100 GB or Unlimited control. Unless a game-specific support instruction says otherwise, retaining AMD optimized is the normal starting point.
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NVIDIA’s newer background-compilation option
NVIDIA has announced a beta Auto Shader Compilation feature in the NVIDIA App. It can rebuild DirectX 12 shaders while the computer is idle and is turned off by default.
The Tool Desk
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- Go to Global Settings.
- Open Shader Cache.
- Enable Auto Shader Compilation if the option is available in your beta build.
This feature is most useful after a title has already gone through its initial compilation and the system has idle time available. It does not establish that every first launch, every DirectX 12 game or every runtime hitch will disappear.
When a larger cache will not help
Shader compilation is only one source of stutter. A bigger cache cannot cure:
- A CPU or GPU that is continuously overloaded.
- Asset-streaming delays while new textures, geometry or audio are loaded.
- Poor frame pacing or an unstable frame-rate limit.
- Insufficient system memory or video memory.
- Game-specific bugs, background processes or storage bottlenecks.
If stutter continues after the cache has had time to repopulate, compare frame-time behavior in the same scene, check CPU and GPU utilization, and test whether the hitch happens only the first time an effect appears. A first-use hitch that largely disappears on subsequent runs is more consistent with shader compilation than a hitch that occurs continuously.
Quick Recap
A practical troubleshooting sequence
- Identify whether the hitch is tied to first encounters with areas or visual effects.
- On an NVIDIA GPU, check Manage 3D settings → Shader Cache Size and avoid a very small limit.
- Choose a documented size that fits available disk space, then restart the game.
- Play long enough for commonly visited areas and effects to compile.
- After a driver update, expect the cache to be rebuilt before judging stutter.
- If files may be damaged, use NVIDIA’s cache-deletion procedure, then allow a fresh rebuild.
- On AMD, leave Shader Cache at AMD optimized unless the game’s support guidance directs a change.
- If the pattern does not match first-use compilation, investigate frame pacing, streaming and hardware load instead.
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