Before any restart, answer one question: how much is broken. One channel dead while its neighbors play means the source behind that entry is down or has moved, and nothing on your device fixes a source. A whole category dark while other categories play is server-side, and the useful action is to report the group name rather than reinstall the app. Everything failing at once points at your line, your player or your session, which are three things you can test in order. Most pages open with restart the app, restart the box, check your internet, which addresses roughly one cause in a dozen. Scoping first costs a minute and rules out most of that list.

Switch to another channel, wait two seconds, switch back. If the picture returns immediately, the session stalled rather than your bandwidth failing, because a stalled session recovers on a fresh request while a saturated line does not. A live stream arrives as segments of roughly six seconds, so when delivery pauses for longer than your buffer holds, you see a freeze even though throughput may have been fine a second earlier. That is why a speed test so often looks healthy in the middle of a fault. The test takes seconds, needs no settings changed, and separates a session or server problem from a real capacity problem better than any single number.

Two settings help consistently. Setting the player buffer to none makes it start a new segment sooner instead of waiting to accumulate, which shortens recovery after a stall. Pointing the device at a public DNS resolver removes a slow or failing resolver from the path, which shows up as channels that take a long time to start rather than as a poor picture. A third fix is structural: player apps hold the whole channel list in memory and destabilize above roughly 18,000 visible channels, so hiding groups you never watch is a genuine repair rather than housekeeping. Clearing the app cache and reinstalling are worth doing after those, not before them.

Some faults are not yours. If a provider oversells capacity, streams will buffer at peak regardless of your router, your resolver or your buffer setting, and no local change touches that. Post-update regressions in a player behave the same way: the app changed and your setup did not. Concede those rather than spending an evening on settings. It also hands you the right purchase question, which is to ask any service what uptime it commits to. Ours is 99.99%, about 53 minutes a year, and a service that declines to put a number on it has answered you. Live sport is when this shows, so judge on a game.