Hi, pretty much everything is set to defaults, if i remember correctly i did check "optimize buffering for low latency hardware", but i'm not too sure, all the other settings i didn't mess with... i'm also using 64 samples (steinberg mr816x card), i also had those horrible noise bursts and glitches in the media player, but even at very light cpu loads just tried previewing a large number of samples in the media player, and everything seems fine... Well, at least thanx for solving my problem already :-)