Yeah I have to agree as well. The aiming sensitivity is too low imo too. If I have to turn around there's no point in trying to aim. I will let go of L1 in that case, which I suppose is reasonable. But when someone is running, and my aim can't keep up with them, that's just unrealistic. I know it should be more difficult to aim at a moving target, but the low sensitivity plus the aim assist makes it nearly impossible.
I can get away with it in co-op, but in comp, I'll die if I try aiming at some blind firing fool running up to me all crazy.