SOLVED: Nvidia driver install (ubuntu) slows loading and seeking in jellyfin

[buzuddha]

Hi All,

The problem: Loading and seeking through jellyfin interface has become quite slow after nvidia driver install and HW acceleration

Fresh install of ubuntu 23.04 and jellyfin. I attempted to install nvidia drivers initially but nvidia-smi threw an error saying it couldn't connect. This error notwithstanding, I was able to stream videos that looked great with near instant load and seeks with full HD audiotracks. The only issue I ran into was that MPEG2  and VC1 streams wouldn't load on many clients (though not all). Despite that, copying the URL and streaming from VLC always worked fine.  

I figured I needed to fix the HW acceleration issue and this would resolve the MPEG2 transcode, so I set about googling and realized I'd installed nvidia-utils-535-server rather than nvidia-driver-535-server. So I installed the drivers and poof nvidia-smi gave output. Yay. Likewise, I was able to solve the issues with MPEG2/VC1. Now, even a DVD MPEG2 film will take a few seconds to load and seeking can take a few seconds to load (same is true for HEVC/H264). Likewise, I've even unchecked the HEVC HW transcode tick box and the problem persists. Still copying the URL and streaming from VLC gives instant loads and seeks for 4K/DTSHD content.

Log should include - server reboot, jellyfin startup, play MPEG2 via jellyfin, MPEG2 via UL in VLC, 4K HEVC in Jellyfin, 4K HEVC in VLC

Logs are here: 
JF.log
HEVC Transcode Log
MPEG2 Transcode Log

Any help here is greatly appreciated!

Thanks