Audio recording off time

Ive not had this occur before but my vocal comp takes are out of whack and I need to manually shift them to sync. I don’t have delay compensation turned on…my audio interface is at 256 and not issues playback the track. I am on Yosemite though. any thoughts?

Are they playing in advance when you playback ?
Because this is an issue I’m facing since Pro 8 and it’s really p*ssing me off

Yes and with every to comp take they are increasingly behind the beat. It’s very bad!

So it seems to work fine for awhile then starts slipping. it is corrected by a computer reboot until it starts slipping again.