SOLVED: Jellyfin client stuttering and playing at slow speed

[calebm]

I have a mini pc with that exact same cpu I used for playing videos on a TV. Playing anything is a stuttering mess - without hardware decoding. I can almost guarantee that is your issue. Assuming Jellyfin and VLC are coming from the source (flatpak or repo), it sounds like hardware decode is available, but not turned on in the client. In the Jellfyin Media Player, click on the menu and open settings. Click on client settings. Scroll down until you get to the Video section. Click the drop down box under HardwareDecoding and change it from decode.copy to decode.enabled. Then see if the video plays any better.