Go into the motherboard bios and disable any cpu throttling. Or disable any software that throttles the cpu that starts with Windows from starting in the first place.
On Asus, it's called Cool N' Quiet. Your board will be different.
Run Windows in high performance mode along with that and issues are fixed.
Look at any MOTU firewire gear
if you want to get serious. It's top-notch professional high end, excellent and can not be beaten. See my specs. That's really only if you want to record from multiple sources simultaneously. If only for listening, it's a bit too much lol.