i just had a weird decode bug on hevc 10 bit content (dont know if other was affected too, bit in all hevc movies). I could see the decode pattern form time to time resulting in a blocky image. Reboot didnt solve it. any how, it was gone as is restored a backup with exactly the same settings.
Edit. Seems like x265 is broken (blocky decode) once I had played one TV channel with deinterlace (method deinterlace, not vaapi). After reboot its fine again. But any how all other vaapi deinterlace methods kinda suck. ill test it anyway. Lets see if all of them break it or only a specific one
Edit. other methods like VAAPI Motion compensate seems not to have that issue.