Okay so I did a little more testing.
I re-ripped the 4k Blu-ray and put thee new file on the server under a different name. When I played it I experienced the same issues.
I also disabled the new video player and played both above mentioned files. Same issue happened.
also used the MKVToolNIX app and ran it though that after clicking the ‘fix bitstream timing info’ option as mentioned in this. post but it didn’t fix it
