Sling loading and desync/lag

[Nerexis 19]

I'm having problems: when someone has attached vehicle to chopper using sling load feature, after while, because of some desync, the rope breaks and vehicle is dettached.
Is there any way to fix it? What settings are directly related to sync of carried vehicles? Is there maybe some script which will prevent it, or will change behavior so its 'attached', instead of using ropes?

[VeeLadd 0]

A simplistic fix for us which seems to work is to get the pilot to first land, climb into the vehicle as driver and then use the sling load feature. Sorry i can't help with a script.