but after that I tried the utility again and change the type 400 to 200
i dont think u should change from 400 to 200(its for specific chipset problem if i'm not wrong)
try use the other option in the utility,some thing with buffer sizes there(not in front of my DAW computer), you should change to something like " medium / large" options there. read the notes that comes with the utility.
other than that i can't think about something else right now.