The more serious problems come when I am using ableton or other music software and asking the tascam to do a lot more work than just playing back an mp3, in which case the processor normally goes to 100% and sound cuts out or lags. I read through that link but I am not sure which files I should be downloading. Should I just search MS download center for Usbccgp.sys and Usbhub.sys and install whatever it gives me? It said something about a global hotfix file but I didn't see a link or file name.