It’s also worth noting that another area could be useful is when Spawning Pawns.
was quite an intensive process in UE3 and if you spawned too many in a single frame then the tick length could be pretty high (working out an initial physics state was one of the culprits here) and the user would notice pauses larger than a second. Epic recommend manually staggering the spawning across time in Kismet, however it was more efficient and quicker to spawn large groups if you queued them up in an array and spawn them once at a time in a tick. was done in US.
I don’t know if is going to be as much an in UE4, however I will also be dealing with much larger enemy numbers too.