I don't know if anybody's has noticed this before, bit I noticed something really strange today, which could have an effect on game performance.
I made a group of Resistance soldiers, BMI dudes, and I wanted them on the west so I grouped them to a west soldier of higher rank and deleteVehicle'd him via a trigger.
Later, I decided to put the Res guys in a Blackhawk. As the Res guys init fields were full of addWeapons and such (I wasn't in the mood for constant alt-tabbing at the time) I put the grp = this; "_x moveincargo.... into the west guy's init field.
Sure enough, my group of Res guys went into the helo... but strangely.. so did the West guy who I'd deleteVehicle'd already.
Strange. And show's deleteVehicle doesn't entirely delete a unit...