As claimed by @vladislavbelov on several occasions (e.g. https://wildfiregames.com/forum/topic/29654-request-sacrificial-knife/?tab=comments#comment-405553), having many different actors affects performance. A way to reduce the effect, but still allow many variants is to optionally disable the randomness. This should limit the number of different variants if disabled, but keeps the old performance if enabled.
Screenshots: