Not the best performance after 10.11.x

[jimmyjoeoneleg]

Check your antivirus for  C:\Program Files\Jellyfin\ServerFiles\Jellyfin\Server file. jellyfin.exe is being flagged by Malwarebytes, and Windows Defender as Ransomware and maybe quarantined, as was my case.  Once I placed jellyfin into the safe list, all is well.

jim