I have a Sony KD 49XG8096. It's currently on software revision PKG6.7220.0365EUA.

The paramount plus app is really giving issues. It's sometimes fine, then it stutters like is dropping frames or sometimes completely pauses. It restarts and lip sync is also off for a few seconds until it stabilises. It seems to get worse the further through the program it gets. Other streaming apps are fine such as Netflix and apple TV. 

TV connected via ethernet directly to router, and I get 70mb download speeds. I've tried clearing cache but no difference. Anyone any ideas. I've yet to try same programs on roku box to see if it's the program, but I would have assumed if it was loads of people would be complaining.