Check this before anything else, because post-update regressions are a distinct and recurring cause that most guides never mention. Player builds change which decoder they select and how aggressively they buffer, and a build that suits one device can stutter badly on another. If the stalling began within a day of an update and nothing else changed, that is your lead. Switch the decoder to the opposite of its current setting in playback options and retest the same channel. If that fails, install the previous version of the app and disable automatic updates for it until a later build lands. This resolves a class of problems no network change touches.

TiviMate keeps the visible list and its guide in memory, and once the count climbs past roughly 18,000 the app becomes unstable. The symptoms mimic a network fault convincingly: slow guide drawing, multi-second channel changes, stutter that appears without any change to your connection. Hiding groups you never watch is a genuine repair rather than tidying, because it removes work from a device that had little headroom to spare. Trim the visible groups in playlist settings, cut the number of guide days, then clear the app's cache so the trimmed list is what actually loads. On older streaming sticks this frequently outperforms every network adjustment combined.

1. 1Hide unused groups in playlist settings
2. 2Reduce guide days retained
3. 3Clear cache after trimming so the change takes effect

Set buffer size to none or minimum. It sounds backwards, but a large buffer means a stalled session sits on a spinner for many seconds before failing, while a minimal buffer fails fast and reconnects, which for live content is the better trade. Try both decoders, since hardware and software decoding suit different chips and different codec profiles. Set a public DNS resolver on the device or router, which mostly addresses stalls at channel change rather than mid-stream. Everything past those three, including reinstalling the app and factory resetting the box, is a long way down the list of things that actually help.

1. 1Buffer size: none or minimum
2. 2Try the opposite decoder setting
3. 3Public DNS resolver on the device or router

A single channel that stalls while its group neighbors play is a source fault at the origin, and no app setting reaches it. A whole group failing together is server-side. Buffering confined to roughly 7pm to 10pm across every device and every app is capacity contention, and again no setting reaches it. That is the honest boundary, and stating it is more useful than another settings list. Where it leads is a buying question: ask any service what uptime it publishes and convert the figure into minutes. IP4KTV runs 99.99%, about 53 minutes across a year, with a $5 24-hour trial covering one full peak evening.