Can you give me an example of soft real time game that isn't hurt by the presence of a garbage collector?
They offer garbage collected languages on top of their C++ game engines for scripting game logic. Any significant modifications to the engine will need to be done in C++
The link is for C++ garbage collection in UnrealEngine, not UnrealScript nor Blueprints
Yep. Game-level garbage collected C++. Which is exactly what I said, I just a didn't mention GC on C++ to avoid obscuring my point. I promise you the code at the game-engine-level is manually memory managed C++
BTW: I've written 6 engines for AAA games. 3 of them used reference counting. AAA C++ games use garbage collection all the time. Maybe yours didn't. Mine did. Unreal does. So does Unity
[0] https://wiki.unrealengine.com/Garbage_Collection_Overview