When aiming with the scopes, most notably the ACOG sight, it’s almost like your movement has been relegated to super slow motion, it’s almost impossible to track any moving target.
This second part may in fact be a bug, but intermittently with the ACOG sight it will literally prevent you from moving the sight into the target, like it blocks you. I’ve had to swing way above or below the target to be able to move ahead of the target then get onto the target many many times.
Oddly enough when zoomed all the way on with the riffle scopes this isn’t much of an issue at all.
This is on PS4.