Shouldn’t we have a solution for this ‘one ASIO device only’ limitation by now? This situation has been going on FOR EVER! It seems to be set in stone! By contrast, aggregate audio devices are baked into MacOS and laughably simple to set up and use.
There are many instruments now that offer audio outputs over USB, but it’s impossible to take proper advantage of this while it means dropping one driver and switching to another. My TR-8S, for example, can present all of its drum tracks on separate ASIO outputs, but I have to switch drivers from my main audio interface, and that’s such a kludge.
I think this is more a ‘Microsoft’ issue than it is Steinberg? But by all means I would think Steinberg would need to file this at Microsoft as a ‘need to have’'!