M, The interface is fine but the same drivers support win 7 and win 10 according to the M-Audio techie guy. He reckons I have a win 7 update missing but didn't say what it is. I tried a platform update but that didn't work and no other updates were made available when I used "check for updates" When I jumped to win 10 it worked perfectly so I'm OK with the M-Audio. It doesn't affect 3rd party stuff, its Windows causing the problems. I suspect the drivers were written for win 10 primarily but a missing component (whatever it is) in W7 stops the drivers loading.
According to my googling experiences Cubase, Studio one, Reaper, Sonar, Fruity Loops, Samplitude, and others have all freaked out with Mirolav within win10 and it appears IK Multimedia don't support Miroslav anymore because we have new guy called Miroslav 2 on the scene so all attention (if any) go there.
I have no problems whatsoever with Mixcraft and Miroslav with win 7 or 10, its the only program (unsuprisingly) that works efficiently. Sampletank 3 opens but fails to load the Miroslav instruments with win 10.
All in all its an Ik Multimedia and windows pooper in one way or another and Notion 5 in win 7 plays with Miroslav but not in win10. This is what's called progress I guess, no big deal one way or another.
No regrets with the M-Audio it works beutifully.