@flyride I didnt know this was actually such a big deal and many people achived this. I had it working yes, with 6.2.3 its gone so i can't demonstrate it. Or is there a possibility to Downgrade? @pmchan
I actually didn't do anything special. I set the "Intel VGA compatible controller" to passthrough and added it to the XPEnology VM. After booting up i got dev/dri & HW Transcoding.
I tried that, but my Passthrough LSI Controller disappears that way. I can try a seperate VM later without its own controller, but still need to get that controller working.
Furthermore, i never tested Plex, only Emby. Though i see no reason they should behave different?