Find what is causing buffering on your TV
Change one thing at a time. Start by checking whether buffering affects one programme, one device or everything on the connection.
Test another programme in the same app
Keep the device and connection as they are. If a second programme plays normally, note the first programme’s name, start time and error. If both stop, try a different app on the same device to see whether the problem is broader.
Compare at the same time of day
A daytime test can miss a fault that appears when the household is busy. Repeat your usual viewing slot, then make a single change such as trying a cable or moving the streaming stick nearer the router. Keep a note of which test improved playback.
Send the short version to support
Include the model, app, viewing time and the one change that mattered. Leave passwords and full playlist addresses out of your report.