Is there a way to disable helicopter reinforcements? They're causing some huge performance issues for me.

I also keep having an issue with the helicopters for Player Combat Support taking off randomly for no apparent reason. I do use VCOM AI, but I added this code to disable VCOM:

[{{Driver _x setvariable ["NOAI",true];} foreach (vehicles select {_x isKindOf 'air'});}, 1, []] call CBA_fnc_addPerFrameHandler;

I'm not sure that code works since the VCOM 3.0 rewrite. Now you have the following

(group this) setVariable ["VCM_NOFLANK",true]; //This command will stop the AI squad from executing advanced movement maneuvers.
(group this) setVariable ["VCM_NORESCUE",true]; //This command will stop the AI squad from responding to calls for backup.
(group this) setVariable ["VCM_TOUGHSQUAD",true]; //This command will stop the AI squad from calling for backup.
(group this) setVariable ["Vcm_Disable",true]; //This command will disable Vcom AI on a group entirely.
(group this) setVariable ["VCM_DisableForm",true]; //This command will disable AI group from changing formations.	
(group this) setVariable ["VCM_Skilldisable",true]; //This command will disable an AI group from being impacted by Vcom AI skill changes.

I just place (group this) setVariable ["Vcm_Disable",true]; in the code line of the combat support modules and it seems to work just fine