[calcon79]

I did more testing. I tried hooking my Pi directly to the TV and without the hvs_priority=0x32ff I still get random audio/video dropouts. So it seems the switch has no effect on that part. I also fixed my issue with HDCP dropouts to the kitchen TV. It had nothing to do with the Pi itself. My switch has EDID memory. I captured the EDID of my television and walla no more dropouts to the kitchen over my hdmi to ethernet run. That makes the Pi think the swtich is the TV so the HDCP handshake happens there instead of over the long hdmi run.

So when using hvs_priority=0x32ff I no longer get audio dropouts. I also don't get the glitching on stereo/surround changes when I use the following settings:

"Sync Playback To Display" enabled
"Adjust Display Refresh Rate to Match Video" Set to "On Start/Stop"
"Pause During Refresh Rate Change" set to 5 sec
I had "A/V Sync Method" set to "Video Clock (Resample Audio)
HW Acceleration was enabled
Audio output was set to 5.1 and passthrough enabled on Dolby Digital and DTS only
Vsync is "always enabled"
1080P resolution and 60Hz refresh rate for the GUI

Those settings make the playback smooth and the glitches are not present when using them. (So far lol)

As for the DVDPlayer issue. That one has no workaround for me. Other than disabling deinterlacing.