Hi @sergiou87. I have also been experiencing this issue. It started a few weeks ago after I upgraded my server from Windows 2012 R2 to Windows 2019. See Enhanced video player will eventually start stuttering.
I have also seen other users post similar reports, either in my thread or other threads in the AppleTV forum. In all cases the issue seemed to have started a number of weeks ago. I noticed that a lot of the reports mentioned running Windows Server 2019 so it may have something to do with that OS, a recent update for that particular OS or recent PMS update that happened to coincide with the issue.
I have not done much testing other than turning the Enhanced Video Player off which has resolved the issue on both of my wired AppleTVs.
