Subtitles Causing Playback to Glitch Out

[Mario8494]

Hey there. Sorry if this has already been solved, but I can't seem to find an answer, and I'm pulling my hair out over this lol.

For the past few weeks, I've been noticing some problems with subtitles playing during a show/movie. At random points during playback, with subtitles enabled, the video glitches out/artifacts for a second or so before continuing to play as normal. There are other times when the video freezes, but the audio keeps playing. When I try to rewind to see the part of the video that was frozen, the video still freezes during that part and the audio plays just fine. 

I've also just ran into another problem where once the video freezes, if I try to go back 5 seconds, a different section of the video would play normally for a few seconds then suddenly jump cut to where I'm currently at in the video. Go figure lol. I experience none of these problems when subtitles are disabled.

Another thing I'll say is I've seen these issues mostly happen with PGS/DVDSUB subtitles. 

Hardware:
CPU: Ryzen 7 5800x
GPU: RTX 3050
RAM: 32 GB (if that matters)

I'm running Jellyfin 10.10.7 on Ubuntu 22.04 via the debian repository.

Here is what I've tried to solve the problem:

• sudo apt update and sudo apt upgrade then rebooting (several times)
  
• Installed the latest nvidia drivers
  
• Ensured hardware acceleration is enabled
  
• Ensured Nvidia NVENC is the encoder for hardware acceleration
  
• Updated Jellyfin
  
• Tried different players (same problem on chrome, Jellyfin Media Player, MPV, shim, Jellyfin iOS, Swiftfin, Infuse, and Safari. VLC on all platforms is the only program I don't have this problem)
  
• Tried connecting to the server on the same network vs outside the network
  
• Tried different browsers (Brave, Chrome, Firefox, Safari, same thing on all of them)
  
• Subtitles Extract plugin (doesn't help with PGS/DVDSUB subtitles)
  
• Tried different devices (Windows, Linux, iOS)
  

I've also tried using the Open Subtitles plugin. I haven't noticed the video stuttering, but I have noticed the timing of the subtitles are NEVER right no matter what movie/show I'm playing. The Subtitles Extract plugin also doesn't help with PGS/DVDSUB subtitles. 

FFMPEG transcode/remux logs are attached. Let me know if there's any other info I need to post. 

Thanks for the help!