Randomly not playing certain events

Hi guys, im having a really annoying issue, certain audio files won’t play back every time, randomly it will not play and come in and drop out later again, for example song starts, vocal verse starts it misses 4 or 5 seconds of the file then it will play I’ll stop start from another spot it will miss some parts somewhere else and so on, its happening across projects not on some…
im on cubase 11 pro, latest update, Mac OS catalina, note I was on an earlier and updated thinking it might help, iMac 27 inch late 2012…
any ideas will be much appreciated
thank you


Try to increase Buffer Size of your Audio Device, please.