Oh! Wow. That's a start.
I've had some big issues with Linux based distros built for mining lately and I had to shift to Windows for the same.
It's good to hear that you can run up to 10 GPUs on Windows OS now.
Probably possible with more than 10 GPU`s, but i dont have any more.
Latest update of Windows does not work so well with AMD Blockchain drivers.. Hope they will update these soon.