I have this issue with certain tracks when I add plugins that need some processing to the track like a Debreath, Auto-Tune, Sound Toys Little Alter Boy etc.
The individual track where I added this plugins has delayed audio. It sounds just as if I had moved the audio event on the time line.
And the only fix I found is moving the event before it’s place so that when in playback it compensates for that delay.
I’m on Cubase 10.5 Pro on Windows 10 i7-8750H and 16GB of RAM