well i was getting a few crashes when i was using USB, only for midi not audio, blue screens about evenly divided between scope.sys and usbhub.sys or other usb drivers. when there is no critical USB going on its totally stable with scope. but i have so much stuff with USB now, theres no escape really if you have outboard gear.
editors, vst helper apps MIDI interfaces etc etc.
So i thought i would be clever and disable all the USB ports and get a PCI-E USB adapter.
Nope, PCI-E shares all the IRQs as well only 1 of the PCI slots is free from all the other motherboard stuff, besides the USB, they also share with the SATA controllers. just like the boards native USB ports.
I had previously had a Supermicro C2SBE which was good, but Ii accidentally killed it

Thing is the supermicro has the SAME chipset (ICH9 but without "R") and they managed to build the BIOS so ALL the PCI slots are apart from everything on the board. so the way it works must be a decision of someone at Gigabyte.
Anyways im off to ebay, unfortunately im going to have to run 2 machines again. 1 for scope (supermicro) and the gigabyte for sequencer and about a zillion USB ports!
Can anyone reccomend a PCI card with an ADAT port?