Since the 5.x kernel based releases many users have been reporting system hangs every few days once the i915 module is loaded.
With reports from a few users detailed in the thread below we have worked out that the issue is caused by the i915 module and is a persistent issue with both the 6.9.x release and 6.10 release candidates.
The system does not need to be actively transcoding for the hang to occur. 6.8.3 does not have this issue and is not hardware related. Unloading the i915
Minor
I just want to report my experience with it.
I have VT-d on one system disable and on the other it's enabled.
Please post your Diagnostics again from a 6.11.5 installation.
I can't remember but have you tried Jellyfin back then and if it's the same?
Are you also able to hook up a monitor to your system and issue this command from a Unraid console (this will prevent the monitor going to sleep):
setterm --blank 0
With this you will be able to take a picture