It takes ages for helicopters in Arma 3 to roll. The controls should be way more snappy and direct.
I've tried rolling bank with a joystick (X52) and using the keyboard. The rolling rate is just too slow. When you need to break, or dodge trees for instance, in real life you'd make a quick input on the cyclic and helicopters generally react very 'snappy'. Now it takes a second or 2 to go from level to 60 degrees angle of bank.