I use a RME Fireface 400 soundinterface. Newest Firmware, newest ASIO Drivers for Win7 64
Under Windows 7 64 Bit the ASIO control panel mostly doesn’t open. Sometimes I had even nasty Renoise crashes and a BSOD.
This worked always without Problems in Other Hosts like Reaper. So I guess it’s no driver issue.
Now I’ve downgraded to Win 7 32 Bit.
Everything works there like a charm. No probs with Renoise.