Hello pelykh,
I have the same problems and the same thoughts about that option. But did you ever found a answer /solution how to solve that problems?
I got a similar problems and AI pawn bones are not hitting player bones when no “server player” is rendering the client and the AI. Only “Visibility based anim tick option” solved it when set to tick on pose and bones.
My problem described here, but it is the same topic.
https://forums.unrealengine.com/development-discussion/blueprint-visual-scripting/1437465-weird-issue-in-mp-only-on-dedicated-server
If you ever found out a better solution instead setting all 50+AI to that option, please tell us.
Thanks a lot