I just reinstalled the whole system, then it comes a problem for my image acquisition. Before the preview function is fast enough as the sync signal. Now however, the processing delayed a lot the acquisition time. It seems what before our processing and acquisition is in parallel, but now it is in series. Is there any settings that I should change? I mean for now it looks like the processing and acquisition is waiting for each other, while before it looks like they are doing in the same time. But I did nothing except reinstall the windows 7 and MATLAB from 2014b to 2016a. Thanks.