[!CAUTION] Advanced C++ Users Only ActorTurnInPlace Version >= 1.4.2

[!WARNING] This guide is only useful for release-tier products with large character counts squeezing out all possible optimization Don't waste your time here otherwise

Rough frame costs from an in-editor test from dedicated server with ~100 characters (thus not particularly accurate): UTurnInPlace::FaceRotation 32μs UTurnInPlace::UpdateAnimGraphData 20.7μs UTurnInPlace::OverrideTurnInPlace 7.5μs ITurnInPlaceAnimInterface::GetTurnInPlaceAnimSet 7.5μs

[!WARNING] The server is using DedicatedServerAnimUpdateMode == ETurnAnimUpdateMode::Pseudo for these tests

These values are not significant, but when added up over 100 characters over an entire frame, they can make a meaningful difference if we reduce them.

Typically the current FTurnInPlaceAnimSet changes when we change stance or when the anim layer changes, your game may have animation states or other variables that affect it. You may find that updating on tick within the anim graph is sufficient simply to avoid an interface call. Regardless, if you find an appropriate way to cache the current anim set then you could subclass UTurnInPlace component, override OnAnimInstanceChanged() and cast AnimInstance to your own, and grab the cached value in UTurnInPlace::GetTurnInPlaceAnimSet() however, it is not virtual and will not be made virtual, so you will need to fork this plugin to make it virtual.

[!TIP] You can respond to anim layer changing by overriding UAnimInstance::LinkAnimClassLayers() and UAnimInstance::UnlinkAnimClassLayers()

OverrideTurnInPlace() is a BlueprintNativeEvent, modifying the forked plugin to be a virtual function and handling this entirely in C++ may gain something worthwhile (may not also).

These changes brought the cost of UTurnInPlace::FaceRotation from 32μs to 13μs