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aiming a gun properly should feel sluggish compared to playing doom. These games arent aiming to be fps in that way
I agree with you totally, however to me the game just felt as though it was lagging when I moved around as you have to move the crosshair across the screen a short way before it will acutally move your view.
I'm so used to things like Battlefield 2/2142 that my eyes would actually try and move left or right when the screen didn't if that makes sense?!?