hi, thanks for the reply
Im using the same bpm throughout. It is with all sounds as i have tryed arp patches and normal patches and both suffer from same problem.
Ive also noticed tonight that even when in a loop it will sometimes go out of time (usually as it cycles back on itself), then i have to stop & press play again and usually it will go back in time then.
And i just tried playing it from the beginning of the project and it worked fine this time, but i think the problem usually comes from when I randomly flick the playhead into a section where the virus is.