I never have had any luck with onboard soundcards. I'm sure there's good realteks and bad realteks. Cheaper ones that aren't up to the task. I used ASIO 4 all on my first off the shelf computer. I never could get a usable latency out of it using WDM drivers much less get a stable recording. One day someone will make a computer with professional inputs and outputs, a real BNC, and real ADAT.