Ok, I finally sorted it out
Do NOT use Steerable_Parachute_F if you want to drop a supply crate or vehicle. Without actual operator that chute always drifts off …
B_Parachute_02_F is doing a better job but since its so big and slows down the fall pretty well, there is still some drift.
NonSteerable_Parachute_F is way smaller and just falls straight down - best choice IMO for precise drops 🙂