Scope the fault before changing a single setting. If only one channel freezes while everything else plays, the problem sits on that channel's source feed, far upstream of your TV. If a whole category goes dark while other categories play normally, that points to the server side of that specific group. If the entire app fails at once, the fault is either your connection, the app itself, or the service as a whole. These are three genuinely different problems with three different fixes, so guessing wastes the twenty minutes you could spend testing instead, and it often leads people to reinstall an app that was never actually broken in the first place.

1. 1One channel = source-side fault
2. 2One group = server-side fault
3. 3Whole app = local, app, or service

A blank channel list on a Samsung or LG smart TV app almost always means the TV's MAC address is not authorized against your playlist, or the playlist URL itself expired or was typed wrong. The app has nothing to load because the server never hands it a channel list for that specific MAC address, and it has no way to explain that to you beyond an empty screen. This is not a sign your subscription failed, and it is not something a restart will fix. Log into your provider's activation page, confirm the MAC address shown on the TV matches what is registered there, and re-enter the playlist link exactly as issued, since a single typo in that URL produces the exact same blank result.

Yes, and it is a distinct, recurring cause rather than a rare fluke. A Tizen or webOS update can reset app permissions or corrupt cached app data without touching your subscription at all, since the update process rewrites parts of the system the app depends on. If the app worked yesterday and stopped right after your TV updated itself, clear the app's stored cache and data from the TV's settings menu first, before you touch your playlist or your provider's portal. If that does not fix it, remove the app fully and reinstall it, then re-enter your playlist details, before assuming your line itself has gone dead.

A live stream arrives in short segments, roughly six seconds each, and your player holds a few of them in reserve before it plays them back to you. Set that buffer to the lowest option, or none, and the picture starts sooner and drops less, because the app stops waiting on segments it does not need yet. Pair it with a public DNS resolver such as 1.1.1.1 or 8.8.8.8 on your TV's network settings, since a slow ISP resolver adds delay before the stream even starts, on top of anything the buffer setting is already costing you. These two settings do more for stutter than any reinstall ever will.

1. 1Buffer: set to none or lowest
2. 2DNS: switch to a public resolver