Yes, this is definitely a problem. I spent some time developing an AI system based on Opsive. Later, due to performance problems of UCC, we had to shelve and adopt other solutions.I'll just chime and ask for any performance improvements or options to turn off performance intensive calculations for optional features. We are working on a VR FPS game with projectiles and right now we have ~8 characters and the characters are pretty performance-intensive.
UCC, as one of the best-selling solutions in the unity asset store, means that it will cover many types of games. I think UCC3 should provide some options or solutions that are not too difficult to solve this problem.