Hi, thanks for your reply. This is not a general latency issue. The kit works well with no latency in my module, until it suddenly hangs up for a second (disturbing my performance). This is allmost like when switching samplingfrequency (masterclock) to 48k from 44,1kk and back in the midle of a song, or like switching to another drumkit while playing, and therefore have a short lag for a few seconds. My samples were recorded at 44,1k and carefully cut with starting and endingpoint. I use the original SD card and thinking ut maybe a SD-card problem? I will check out Lustark. Thanks.