want to say This is a ryzen system.
this is a intel thread.
there a reason I wont comment on ryzen systems in this thread because to me they are diffrent architectuires. with drivers that differ to there core.
Its possible that windows reinstall if is either getting the latest updates and doinfg a better job at removing older update packs.
its possible you havent been keeping the the updates schedule done.
its possible its removed old game profiles and residule background or less background apps
its possible your windows has errors which got fixed.
It might be the fix for some people here, but its not a fix I suggest doing for the sake of ow2.
I am pleased you got it to work though