Solved
Mouse lags when turning BF5
Not sure exactly how to describe it but when I am playing the mouse starts slowing down and delaying movements when I turn. It only does this sometimes and started recently. I have had the game since...
It could be that the system resources were too bizzy like a background update and such. It could also be that you ALT+TABed out of the game for some time and need to pre-cache the game data again. This usually goes away after 3/4 seconds, updates come and go on Win10 they take a bit longer then that. Since i had this problem more often with my new speedy mouse i went a step further and set RAW mouse input = ON in the control settings > advanced controller settings, this does the trick for me.
