[trsqr]

Did u try playing the files on other hardware as well?

Ffs people stop guessing. We need a debug log (wiki) or forget it.

I think it's a valid question to narrow down the possible cause and not guessing. Can the problem be seen on a Radeon or Nvidia based system or even another Intel system? If not, then at least we know that the files played should be ok. It's also possible that the debug log shows nothing regarding this.. But agree, a debug log is necessary to start any more serious troubleshooting.