for me the last patches of ow have had worse performance. Oddly enough, i found that steam version for whatever reason runs better for me than battle net version.
I double checked all settings on both many times etc and run benchmarks, and especially with “1% lows” etc - steam version was more stable atm. I have no idea why.
5800x3d / 4090 / win 11 here.
Anyways check that you have amd virtualization disabled in bios - that gives quite a lot of penalty especially for high fps gaming.
People who are arguing against you dont know what they’re missing. Lower performance is lower performance.