This was a quick little theory I tested before I got tired for the night but if anyone interested in more I might continue
I done this quick as possible because I am tired
Since the introduction of DX 12 for Windows 7 thanks to Blizzard
I decided to see a difference FPS wise between Windows 7 and Windows 10 in DX 12 for WoW, since DX 12 gives much better performance
Microsoft says Windows 7 is incompatible with Ryzen/modern Intel chip like a 9900k or 8700k, but you can still install it and get a work around no problem
No you don’t need to hack Windows 7 to make it work… all you need is the drivers from your official motherboard website.
For example, I use Asrock
https://www.asrock.com/microsite/Win7Install/index.html
moving on, this is to prove I have Windows 7 on my Ryzen PC running properly
Latest drivers for my Vega Frontier, 32 GB of DDR4 CL14 3200, Ryzen 2700x running at stock speed
Now, I play at 4k, my FPS would be different if I was at 1440p/1080p
On Windows 10 using DX 12
My FPS sitting in Boralus on a populated alliance realm, my FPS averages 70
Windows 7 on DX 12, it took me about an hour to get WoW set up and drivers installed, with the same addons installed on Windows 10 setup
I’m not sure about raiding with a big group yet but between windows 7 and 10, I gained 10 more FPS with windows 7 thanks to DX 12
If you have doubts you can click on the images, compare it to the screenshot file names on my first screenshot, they both have the exact same last 6 digits
Tomorrow if anyone interested I wi ll do world boss fps comparisons but have MSI overlay displaying, I apologize for not doing that with these screenshots
But overall this was just a curious thought about if WoW performs better for people who still use Windows 7 and enable DX 12, and I would believe so