the thr/pitch stick is normally very responsive with CP heli and you are supposed to micro or macro manage it. unfortunately you dont have the option of playing with pitch curves to customize it to your liking.

it's something you will get used to over the process of learning:

learn to take off and land, start off in tail in hover, THEN

pitch pump to learn collective management. this is how it snapped for me. shake the heli up and down like the 3d pilots do showing off their heli's power. use lots of positive pitch if needed.

side in hovering, forward flight, circuits, nose in hover, backwards flight, etc...