I can't speak for H9Control, as this is not my area. But, given that you are having hardware problems with your H9, PLEASE contact support@eventide.com, giving AS MUCH information as you can.

We make little use of Windows 10, as it does not offer much to serious development people – it appears to be mainly designed for tablets. Because of this, we don't have as much experience with it as we should. Win7 works just fine.

Obviously there is room for improvement here – but, I would always suggest that you use the oldest OS that will do what you need – new shiny things will have new shiny problems and less support. A counter argument is that it is difficult to buy a new Win7 computer these days. We need to do better.