2023 UPDATED Jellyfin media player and SVP tutorial:
Hello this method is now outdated and no longer working. This new method is working for me as of Jan 8th, 2023.
Step 1: create a new folder called mpv inside of APPDATA/Local. It should look like "C:\Users\<name>\AppData\Local\mpv"
Step 2: create an mpv.conf file inside of the mpv folder you just created. It should look like "C:\Users\<name>\AppData\Local\mpv\mpv.conf"
Step 3: inside the mpv.conf file write:
input-ipc-server=mpvpipe
hwdec-codecs=all
hr-seek-framedrop=no
Step 4: copy that mpv.conf file into "C:\Users\<name>\AppData\Local\JellyfinMediaPlayer" so there should be two copies of the mpv.conf file, one in mpv/ and one in JellyfinMediaPlayer/
Step 5: Enjoy ur shows 
I haven't tried this on linux, but based on what another user has said I will assume that the folder location should be changed to ~/.local/share/mpv/mpv.conf instead. Hopefully this helps someone out there!