Live TV jumps back

Greetings All

My first post here. I hope you can help me.

I have set up my PVR service on Kodi 17 using the m3u files the service provider sent me, and everything is functioning well, except for one issue:

On a number of streams (not all) the stream will suddenly jump back and repeat the last two or three seconds. Then it runs fine for a while and the same thing happens. It is really annoying and makes some streams unwatchable.

Has anyone else come across this phenomenon? I haven’t been able to find anything in the forum.