The more smooth aim you add, the more legit it will look like.
But, in Paladins you need to compensate the smooth aim for prediction.. So using something like smooth aim 10 and prediction scale 10 it should be very smooth (human-like) and also predict very well.
In other games where prediction is not needed and the weapons are hitscan, you can just change the smooth aim to 30+ to have insanely legit aim assist rather than an aimbot.