could be a driver problem I have a usb EMU 1204 midi audio interface that is not 64 bit supported they just dropped the product 3 months after I bought it.
Not sure if your re running into the same problem. I am now going usb keyboard and mics which aren’t anywhere near the quality of the stuuf in the studio, but, music companies bring out new hardware and then drop them after two years so you are left without a front end. at least usb is supported and latency with usb 2 -3 is no longer an issue.