Scope answers this faster than any setting. Note whether the trouble is on one channel, across one category, or everywhere. One channel is that source. One whole group is almost always server-side, because groups map to back-end sources. Everything at once implicates the line, the player or the session. Then run the switch-away-and-back test: leave the channel, come back, and see whether playback resumes immediately. Clean recovery means the session stalled, so bandwidth was never the constraint and no speed upgrade would have helped. That single test costs ten seconds and eliminates the advice that fills most troubleshooting pages, which is to restart the app and check your internet.

1. 1One channel: source problem, nothing local to fix
2. 2One group: server side, report it rather than tuning settings
3. 3Everything: line, player or session, in that order

Set the playback engine to hardware decoding rather than automatic. Automatic sounds safer but it can fall back to software mid-session after a failed handoff, and software decoding of 4K HEVC will overwhelm stick-class hardware. The symptoms are distinctive: frames drop while audio continues, the device runs hot, and the picture recovers if you drop to a 1080p variant. Some builds offer a hardware-plus mode that pushes more of the pipeline onto the GPU; it helps on some chipsets and breaks audio on others, so treat it as a test rather than a default. If hardware decoding fails outright on a channel, that channel is probably using a codec your device cannot handle in silicon.

Player apps keep the whole visible channel list in memory along with guide data for it. Above roughly 18,000 visible channels, that structure starts to cost more than small devices can comfortably give it, and you see slow category loading, delayed guide draws and outright crashes on launch. Hiding the groups you never watch is not cosmetic housekeeping; it removes objects from memory. With a catalog of 54,000+ live channels, most households are watching a few hundred, so trimming the visible set to the countries and categories you use is the single largest stability improvement available inside the app. Favorites lists do the same job from the other direction.

Two are worth changing. Set the buffer to none or the smallest available value: a larger buffer delays the start of playback and makes recovery from a stall slower, because a live stream arrives in roughly six-second segments and the player is always chasing the live edge. Second, point the device at a public DNS resolver, which removes a class of slow or failing lookups when the stream URL resolves to a different host than the portal. Everything else in the settings menu is mostly cosmetic. Clearing cache helps once after an update; changing the user agent almost never does anything measurable.

When something updated. Post-update regression is a distinct and recurring cause: an app or operating system upgrade lands and a setup that worked the day before stops. It has been reported across platforms in the same week, which is the signature of an app or OS change rather than a service fault. The fastest separation test is to load the same credentials into a second player, such as TiviMate, VLC or Kodi. If the second player works, the first one regressed and you wait for a fix or roll back. If both fail identically, the fault is upstream and the player was never the problem.