I’ve also build a DAW setup around the Asus z370-a prime. I just love Asus’ BIOS layout and structure. The board is nice, and I haven’t really stumbled across any bigger problems. The DPC latency is pretty low out of the box, about 10-50 microseconds, with a few peaks about 150 microseconds from directx and and the OS kernel. If you disable the cpu’s power status (c-states) in BIOS, the DPC latency is down to about 0-20 microseconds here, with no peaks.
I’m using a RME Raydat I/O card to my converters.
SLL