Reducing Animation Graph Overhead for Cheap NPC

[pixelvspixel]

Does anyone have any experience or pointers for making a copy of the animation graph that is cheaper for filler NPC? Like specifically what are the really expensive parts of the graph? I think I could get away with just having walking, foot locking. I assume a lot of the cost is actually from the layering that is being processed.

Also, does anyone know if there is a cost for using the monolith bp vs linked animation graphs? Is this just an organizational preference or is there a processing gain here as well?

Thanks!