I ran into an interesting bug, that has likely been plaguing me for a while. Effectively, the Jellyfin stream caused the entire PC to lockup, including the hypervisor, though visually, the PC seemed to be operating normally. Back when this machine was a gaming PC, I had a similar issue, where during gaming/streaming sessions, the device would hang and be non-interactive. No errors were logged, so I always expected a hardware issue, but the infrequency and randomness of the error caused headaches for years.

After some research and log reading, I found the apparent culprit - my network interface. After some further reading, the specific NIC used on the motherboard is an Intel I219-V, which has been documented with issues plaguing the DMA when under sustained high throughput.

I’ve implemented a temporary fix of disabling TSO/GSO offloading, but will likely need to add a new PCIe NIC to permanently fix the issue.