[ReactiveJelly]

Is it GC pauses?

I know .NET's GC is supposed to be pretty good, but Unity is still using the Mono implementation, right?

I can barely stand C++, but I'll put up with it to avoid long GC pauses or dynamic typing. (JS)

[vertex-four]

Unreal’s C++ code (specifically, anything deriving from UObject) is garbage collected as well.

[rowanG077]

Really? Why is that in the times of smart pointers? You can just malloc a pointer and it gets cleaned up automatically by unity if it's no longer used?

[vertex-four]

Because you want garbage collection to happen at specific, well-defined times (i.e. in the slack between frames), in a separate thread - not in the middle of rendering a frame on the main thread when you happen to drop something out of scope.

[rowanG077]

Still I can't imagine GC is the best solution for this. You can easily make a memory allocation strategy that hands out shared_pointers or something like it that get cleaned up at will defined times instead of when it goes out of scope for a user.