Find the cause of buffering in three tests
Separate a failing stream from Wi-Fi, the TV app and the wider internet connection.

Test a second title and an independent app
Keep the same screen and connection. Play a different authorized item in the same app, then play a known working stream in a separate app. A single failing title and several apps failing at the same time point to different investigations. Note how long each test runs and whether it failed at startup or after playing normally.
Move only one part of the setup
If you can connect the same device by Ethernet, repeat the same failing item at a similar time. For Wi-Fi, try one viewing session near the access point and compare it with the normal TV position. Avoid changing DNS, playback mode and router settings at the same time. A peak speed test cannot capture every short interruption a live stream encounters.
| Result | Next useful question |
|---|---|
| Same item fails on both connections | Does it fail on another compatible device or profile? |
| Only the usual TV position fails | Does Ethernet or better access-point placement solve it? |
| Several apps fail together | Do other devices on the same network see the interruption? |
| Only live sport breaks up | Does the issue follow one feed or one time window? |
Share a test someone else can repeat
Give the device, app version, network type, local time and the two comparison results. Omit private source URLs. If you can reproduce the fault on two devices while other authorized streams work, send that specific evidence to the service operator.
Sources
Questions readers ask
What should I try first when IPTV buffers?
Play a second authorized title in the same app, then a known working stream in another app. Keep the device and network the same. The two results tell you whether to check a single source, the player or the connection.
Why can a speed test look fine while a stream keeps pausing?
A quick test can miss short interruptions at the TV or along the route. Repeat the same live feed for several minutes and compare another app or a wired connection at the same time.