Hello. I have suffered this problem every time I have attempted to update from 8517: jerky video on both live reception and recording playback. Every time, I have returned to 8517.
I have just tried 8528 on my Mac Mini running Catalina 10.15.7, the latest will run. Again, jerky video.
So I am pleased to find this thread, which has solved the issue, finally.
However, copying the command above did not initially work. Opening it in a text editor revealed a number of invisible characters in the string which were causing problems.
This is a corrected string that worked:
sudo codesign --remove-signature /Applications/EyeTV.app/Contents/MacOS/EyeTV
Mark.
PS - I think this was due to copying from the quote post, not from the original post. Either way... the above works.
