Does anyone know any solution to these problems? I can confirm that my IPTV is not the problem by using it on Tivimate on my AndroidTV device at the same time. It's smooth on Tivimate but It's always struttering on Progdvb. Another problem is the constant flickering. It usually goes away but comes back often, especially when switching channels.
Prog dvb for windows? Replace some codecs. Maybe ffmpeg too.
If it's on Android, clear cache.