There has always been a degree of input and especially mouse and command lag that I can't discount as user end fault.
The performance rate drop off is exponential as you approach a computer optimized for a 2013/2014 game.
I have never been able to get coh2 to run on anything but the worst settings, part of that is on my end because I haven't invested in a high end competitive gaming rig since coh2 was released... which was built specifically for coh2's release.
Grats to those who don't have performance issues with coh2. But the bar is very high to get coh2 to run nicely, and far above what can get your average user to try, let alone stick around, coh2s multiplayer environment.
So sure, it doesn't affect player micro because those players affected don't stick around for long.
I used to play on a 650 ti boost and a 3rd gen i3. I honestly never had any problems with no AA and a few other settings turned down. I used this all the way up to last year. Sometimes the game has worse input lag than normal, I don't think it's hardware related.
I'm not saying the game runs well. I would definitely expect a higher framerate on my current hardware than what I get, but acting like it actually hinders gameplay is just wrong.