Thanks for updating to Matrix. Much appreciated.
I've done a clean install on my current setup: Pi 4 with fast USB drive on USB3 port. The installation is straight onto the USB stick, no SD card.
There are two items that I hope to resolve, but could not on my own:
1 - When I pause a video and there is a delay (around 10 minutes or more) before I resume watching, the video is frozen, but the audio resumes. Rewinding a few seconds resumes normal viewing.
2 - With normal playback, after about 10 minutes or so, the video and audio loses sync and there is "stuttering / jerky" playback. Only stopping the playback, and playing the video again from scratch works.
It looks as if the buffer is loading as it should. Enough in buffer to play (but playing off the local fast USB anyway...).
This same hardware setup worked fine before upgrading to Matrix, so I'm obviously suspecting software / setup, not HW.
Kind regards and thanks in advance