Set the buffer to none or minimum so playback starts sooner and the app recovers faster after any stall, instead of falling further behind live with each hiccup. Switch to a public DNS resolver, which usually answers faster and more consistently than your ISP's default and removes one more source of delay before video even starts loading. Hide channel groups you don't watch, since players hold the whole visible list in memory the entire time they're open, and they start to slow down above roughly 18,000 channels regardless of your connection speed. All three are free, take a few minutes total, and target a specific, checkable mechanism rather than being a vague catch-all you try because nothing else has worked so far.

Server capacity is the provider's problem, not yours, no matter how carefully you tune your device. If a channel group buffers for everyone watching it regardless of device or network, no local change reaches that layer, and spending more time on buffer or DNS settings won't move the needle at all. This is the part of non-buffering IPTV that ranking pages tend to skip entirely, because admitting it means the provider's own uptime record matters as much as anything you personally do, which is a harder thing for a page selling a fix to say out loud than another list of settings to try.

A figure like 99.99 percent works out to about 53 minutes of downtime a year, which gives you a concrete ceiling on how often server-side buffering should happen at all across the entire service. That's a testable number you can hold a provider to, unlike a vague promise of a smooth experience that means nothing specific and can't be checked after the fact. Ask any provider for their actual uptime figure before assuming one service's server capacity is comparable to another's, since the gap between a real number and no number at all is usually the gap between a service that plans for load and one that doesn't.

Run the local checks first: match resolution to tested bandwidth, set the buffer low, switch DNS, and trim your channel list down to groups you actually watch. Then use a short trial to see how the service behaves on your own network under real conditions, at the times of day you'd actually be watching, rather than trusting a page that only talks in generalities about smoothness. A trial priced separately and short in length, like a 24-hour window, is specifically built for this kind of testing rather than a long-term commitment you can't easily back out of.