How Do I Get My Roku to Stop Buffering?
Here are all of the best ways to stop buffering when using a Roku to stream media.

• Restart your Roku. A quick restart only takes a few seconds and can fix your buffering problem and other issues.
• Reboot your Roku. Turning your Roku off and on again can fix most bugs and glitches.
• Update your Roku. Select Settings > System > System Update > Check Now to update your Roku’s operating system to the latest version.
• Remove a channel or app and then re-add it. Delete the app or channel that’s buffering a lot and then add it back again.
• Check for overheating. If your Roku starts buffering an hour or so after it’s turned on, it could be overheating. Clean it frequently, so dust doesn’t accumulate on it, and make sure that it’s on a hard surface instead of a cloth or covering. You may also want to position it on its side, so more of its surface is exposed to air.

Switch to a wired internet connection. If possible, connect your Roku device to a wired internet connection. Wired connections can be faster than wireless ones and can decrease the chances of media buffering.

Disconnect other devices from your internet. Smartphones, tablets, computers, and video game consoles all using the internet simultaneously can cause buffering when trying to stream media as the network becomes overwhelmed and unable to process all the downloads and uploads at once. Try placing these other devices in Airplane mode or canceling any downloads or updates they may have running.