Restart Your Firestick. If you want to stop your Firestick from buffering, one of the first things you should try is restarting your device.
Uninstall Unnecessary Apps. If your device has a lot of apps installed, this adds to the demand on the device’s software and slows down its overall performance.
Clear App Cache on Firestick. Cache is the computer memory used for the storage of instructions or data. Clearing this may help solve the buffering issues.
Turn Off Collect App Usage. Your Firestick collects data from all applications on your device. Also, many apps use background connections while you’re streaming content.
