Note: you must also build the software yourself to get ASIO support for Windows (which uses RtAudio). You'll be stuck with an order of magnitude greater latency under WASAPI (or worse under MME), assuming your device drivers are built to use it.
https://docs.zrythm.org/md_doc_dev_windows_build.html
IANAL, but it looks like maybe the devs don't want to to register the license with Steinberg and keep this free (as in beer) licensing-wise?
This looks cool, but the barrier to entry to a bit steep under Windows. I want to make noise, not spend time messing around with building software.