thx for the reply. i'm now with qhy debugging the problem, let's see what they can find. www.qhyccd.com/bbs/index.php?topic=8637.0 ah ok, good to know that RP4 can provide a bit more fps, though 100fps is rather low? I get >500fps with smaller ROI in 8bit with the ASI462 on my laptop (not rp4) thx for your help!Read More...