[yeasku]

Preciselly because C# uses GC is common to just allocate everything in a chunk to not trigger the gc later.

Aka you minimize allocations in gameplay.

[badsectoracula]

This is far from common in practice and it is only applied sporadically. Something like allocating formatted strings for the HUD is IME much more common (and done in UE5/C++ too, so not even a C# forcing GC excuse).