If your Roku keeps buffering, first check whether the problem affects one title, one app, or everything you stream. Then use Roku’s built-in connection test to separate an app or service problem from weak Wi-Fi or an internet-access issue. Work through the fixes below in order, starting with the least disruptive.
First, find out whether the problem is one title, one app, or your whole Roku
Try another movie or episode in the same service. If that also buffers, open a different streaming app. If only one title or app has trouble while other content plays normally, the cause may be specific to that service rather than your Roku’s general connection. Check whether the service reports an interruption and whether your account or subscription includes access to the content. Roku’s playback troubleshooting guidance recommends this kind of comparison.
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- One title: Try another title in the same app.
- One app: Test a different app, then check the affected service and your access to its content.
- Multiple apps: Continue with Roku’s network test.
Run Roku’s connection test and read the results
- Press Home on the Roku remote.
- Open Settings > Network > Check connection.
- After the test, open Settings > Network > About to review the connection and signal information shown for your device.
The connection test checks whether the Roku can see the network and reach the internet. If the Roku connects to your router but cannot reach the internet, try opening a public website on another device connected to the same network. If that device also cannot get online, contact your internet service provider about a possible outage or access problem. Roku’s connection-check instructions explain the test and its results.
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What Roku’s signal ratings mean
- Excellent: Strong, stable signal. Roku says, “Streaming should be smooth with no buffering” for this result; it is a description of the rating, not a guarantee that every app or network condition will be trouble-free.
- Good: Reliable for most streaming.
- Fair: Weak signal.
- Poor: Very weak signal, likely to cause buffering or disconnections.
Compare your internet speed with Roku’s typical figures
Roku lists typical download-speed requirements of 3 Mbps for SD, 5 Mbps for HD, and 25 Mbps or more for 4K Ultra HD. These are typical figures, not a promise of smooth playback in every home; individual streaming apps may set their own requirements. A speed result alone also does not identify whether the Roku’s Wi-Fi signal, internet service, or network activity is causing the interruption.
#1 Best Overall
- HD streaming made simple: With America’s number 1 TV streaming platform,* exploring popular apps—plus tons of free movies, shows, and live TV—is as easy as it is fun. *Based on hours streamed—Hypothesis Group
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Restart the Roku and network equipment
Use the restart sequence that matches what the connection test showed. Roku’s Wi-Fi improvement instructions say to unplug the Roku, router, and modem for about 15 seconds, then power them back on in this order: modem first, router second, Roku third. Wait for the modem and router to reconnect before testing playback again. See Roku’s Wi-Fi improvement instructions.
If the Roku reaches the router but has no internet access, Roku’s connection-check page separately advises unplugging the Roku and router for 30 seconds. Follow the instruction relevant to the symptom rather than treating the two durations as one universal rule.
Rank #2
- 4K streaming made simple:With America’s number 1 TV streaming platform,* exploring popular apps—plus tons of free movies, shows, and live TV—is as easy as it is fun. *Based on hours streamed—Hypothesis Group
- 4K picture quality: With Roku Streaming Stick Plus, watch your favorites with brilliant 4K picture and vivid HDR color.
- Compact without compromises: Our sleek design won’t block neighboring HDMI ports, and it even powers from your TV alone, plugging into the back and staying out of sight. No wall outlet, no extra cords, no clutter.
- No more juggling remotes: Power up your TV, adjust the volume, and control your Roku device with one remote. Use your voice to quickly search, play entertainment, and more.
- Shows on the go: Take your TV to-go when traveling—without needing to log into someone else’s device.
Improve the Wi-Fi connection before changing router settings
A weak or obstructed wireless path can interrupt streaming even when other devices sometimes appear to work. Try these placement and traffic changes first:
- Move the Roku and router closer together where practical.
- Reduce obstacles between them, and avoid enclosing the Roku in a cabinet. If possible, do not leave the player hidden behind the TV.
- Keep the router away from potential interference sources such as cordless phones, microwaves, and baby monitors.
- Pause large downloads or other streaming on the home network while testing.
Retest the connection and playback after each change so you can tell whether it helped. Roku’s Wi-Fi guidance covers placement, interference, and competing network use.
Rank #3
- Stunning 4K and Dolby Vision streaming made simple: With America’s number 1 TV streaming platform,* exploring popular apps—plus tons of free movies, shows, and live TV—is as easy as it is fun. *Based on hours streamed—Hypothesis Group
- Breathtaking picture quality: Stunningly sharp 4K picture brings out rich detail in your entertainment with four times the resolution of HD. Watch as colors pop off your screen and enjoy lifelike clarity with Dolby Vision and HDR10+.
- Seamless streaming for any room: With Roku Streaming Stick 4K, watch your favorite entertainment on any TV in the house, even in rooms farther from your router thanks to the long-range Wi-Fi receiver.
- Shows on the go: Take your TV to-go when traveling—without needing to log into someone else’s device.
- Compact without compromises: Our sleek design won’t block neighboring HDMI ports, so you can switch from streaming to gaming with ease. Plus, it’s designed to stay hidden behind your TV, keeping wires neatly out of sight
Try Ethernet or 5 GHz Wi-Fi if your equipment supports it
Test 5 GHz Wi-Fi
If both your Roku and router support a 5 GHz network, try connecting to it. Availability and support depend on the device and router, so this is not an option for every setup. Roku’s connection guidance discusses 5 GHz as a possible connection mode.
Test a wired Ethernet connection
Roku describes Ethernet as more stable than Wi-Fi, but not every Roku model has an Ethernet port or supports a compatible adapter. Check your model’s connection options before buying a cable or adapter. If wired networking is supported, temporarily connecting the Roku to the router can help determine whether Wi-Fi is the weak link. Roku discusses wired connections in its connection-check article and Wi-Fi improvement article.
Rank #4
- Hides behind your TV: The all-new design plugs right into your TV with a simple setup
- Super-fast startup: Start streaming channels like Disney+, Prime Video, HBO Max, Apple TV+, Netflix, Sling, and Hulu in a snap—just turn on your TV
- Long-range Wi-Fi: Enjoy fast, smooth TV streaming in any room with a strong Wi-Fi connection, now up to 2x faster
- No more juggling remotes: Power up your TV, adjust the volume, and control your Roku Streaming Stick with the Roku remote
- Voice search & control: Quickly search, play entertainment, and control your streaming device with the voice remote
Check for Roku and app updates
Update Roku software
Open Settings > System > System update and check for an update. Menu wording can vary with device model, region, and software version. Roku includes a system-update check among the steps in its connection troubleshooting guidance.
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If buffering or playback failure is confined to one app, check for an app update. Roku also lists removing and reinstalling an app as a possible remedy. Before removing an app, check account implications if its subscription is billed through Roku. Roku’s playback troubleshooting guidance covers app updates and reinstalling.
Best Value
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- Our most portable stick – Thin and light, without extra clutter. Connects directly to your TV's HDMI port without blocking other ports.
- Easier than ever to set up – Now with Direct Power, it's powered by your TV with the included USB-C cable and eliminates the need for a wall adapter.
Change router channels only if simpler fixes do not work
If the connection remains intermittent and you are comfortable changing router settings, check whether the router is selecting a congested Wi-Fi channel. Roku says automatic channel selection can contribute to intermittent or slow connections. Its North American guidance names channels 1, 6, or 11 for 2.4 GHz and non-DFS 5 GHz channels 36–48 and 149–165. These recommendations are region- and equipment-dependent: available channels and DFS support vary by router, Roku model, and software. Consult your router maker or ISP if you are unsure, and avoid changing settings you cannot restore. See Roku’s advanced networking guidance.
Reset network settings or factory-reset only as a last resort
A network connection reset means reconnecting the Roku to Wi-Fi afterward. A factory reset is more disruptive: it erases device settings and requires setting up apps again. Try the less disruptive troubleshooting steps first. Roku’s connection-check article says, “In extreme cases, reset your Roku to factory defaults, but only after trying everything else.” Roku’s Wi-Fi improvement guidance covers resets and their consequences.
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