i m interested how you guyz solve this problem:
when you apply delay on a certain sound it always needs some time to envelope, cca. 100-200ms, which makes it enough to mess up your loop.
it wont happen if u apply delay on audio file, but when u work with midi it will.
i usually cut the first half of loop in cubase and then copy-paste other half, but i reckon there must be a better solution to this problem.