Hi guys,
sorry for reviving this old thread but I have the same problem.
I’m also using a 3rd party skin for custom home menu items.
I can play exactly one 4k file fine and as soon as I try to playback a second file the behaviour happens.
My current workaround for this is to start playback of a 1080p file, stop it and then start the 4k file again.
It works 10/10 times this way but it’s an annoying workaround. I will try the “skip 10 seconds back” method today. If this works for me I would be more than happy.
Regarding @Ray’s suggestion: I always thought we should NOT set the GUI resolution to 4k because it would break the HDR auto switching code according to this pinned thread: Recommended Kodi Settings
Is that no longer the case?