A live stream is not one continuous file. It arrives as a series of roughly six-second segments, requested one after another. When a segment is late, the player has nothing to show, and any gap longer than the buffer becomes a visible freeze. That freeze can come from a stalled connection to the server just as easily as from a slow one, and the two look identical on screen. Switching away breaks the connection and forces a fresh one. If the fresh connection plays cleanly, the old one had simply stalled, and no bandwidth was ever missing.

If the switch-back test recovers instantly, the fix is usually just that: force a new session by fully closing the app, not just backing out of the channel, and set the player's buffer to none or minimum so recovery starts sooner next time. If the test does not recover, check whether it is one channel (source feed), one group (server-side), or everything (line or provider capacity), because that split decides whether a setting can help at all or whether nothing on your device will. Only after you know which of those three you're facing is it worth touching a router, a DNS setting, or reinstalling anything.

A repeating freeze on a fixed interval is a different pattern from a one-off stall, and it usually points to Wi-Fi contention rather than a server fault: something else on the network is grabbing bandwidth in bursts, or the signal is marginal enough that packets are being resent on a cycle. Move to 5 GHz or a wired connection and watch whether the interval disappears. If it keeps the same rhythm on wired too, look at buffer depth and DNS next, since those are the two settings that consistently move the needle.

Set buffer to none once, switch to a public DNS resolver once, and hide channel groups you never open so your player is not holding a bloated list in memory. Those three changes are set-and-forget. The switch-back test stays useful after that, as your five-second check any time buffering returns, so you are not re-diagnosing from scratch each time it happens. Keep an eye on app updates too, since a fresh update is the most common reason a setup that worked for months suddenly starts stalling again, and the fix there is usually reapplying the same settings, not finding a new cause.