I don't watch videos, but I'm going to blindly guess that this is fixing borked Windows scheduling that pegged SMT's fake cores before real cores.
If that's the case, Linux was basically just that much better (though you could "fix" it on Windows by forcibly disabling SMT in bios). But most of the time the performance is pretty similar (especially in the real world where you're aiming to be GPU limited).
I don't watch videos, but I'm going to blindly guess that this is fixing borked Windows scheduling that pegged SMT's fake cores before real cores.
If that's the case, Linux was basically just that much better (though you could "fix" it on Windows by forcibly disabling SMT in bios). But most of the time the performance is pretty similar (especially in the real world where you're aiming to be GPU limited).