ok, when i made this topic, i wasn't well awake

so here is some more info,
the jpg above is the rendered loop from a normal 4/4 midi clip, so a note on 1.1 1.2 1.3 1.4, but as you see , when i render it, the audio isn't quite onbeat ... i tried render settings with 'render as loop ' on and off, doesn't changes anything..
if any1 could help, it would be much apreciated.. thx !