"> AFAIK the general buffer size idea is: keep it small during creative > work when tracking and recording to get low latency, keep it larger > when mixing and when cpu load is getting heavy." "Are we talking about the same thing :-) ? We were discussing processor buffer, not that of an audio driver :-) . Agree with all the points otherwise :-) . Best, Andy" Not sure Andy, I´m talking about the audio preferences settings in Logic. Judging by your post I may have misunderstood what the processor buffer does. Care to shed some light on the matter? All the best /E _____________________ Erik Häusler +46 708 650 550 erikhausler@mac.com