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I think you should develop something like "switch actor when dead". For example if I have 3 actors and if I set for the actor 1 to switch to actor 2 when dead, then when actor 1 dies, it should automatically switch to actor 2. That would help when filming ultra super complex action scenes. (sorry for bad english)

How did you take it from gmod to gta? Is there any tutorial about that?

You should add something like "Actor Invincibilty Setting" when i try to make myself invincible by trainer, also the all actors i switch becomes invincible.

Recordings could be better, especially in vehicles.

You should enable exploding nearby vehicles by del only when menu is shown. Otherwise when i try to spawn peds using ped spawner everything explodes.