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Moving the mouse slowly and using awsd help. You can nullify it with practice

Yeah, that's what I do. I also quite like the challenge of the slightly unstable controls, it really gives a sense of how difficult it was in real life to score a kill :) 

I would not brag about it myself because it's just there thanks to my lack of maths and physics knowledge. But yes, I agree it gives a lot of difficulty and having mathematically perfect controls like war thunder would isn't that great.