Axis Lock OR Faster BodyGyros

Problem: the minions in my game, Battle for ROBLOX, fall over a lot. BodyGyros can be used to fix this but they severely (and when I say severely, I mean severely) lag down the game.

Solution: I would like to be able to set an axis of rotation lock on my minions such that they can not fall down. That is, I want my HRPs to only be able to rotate along the Y axis.

Alternative solution: Make the humanoid object not fall down as easily as a piece of anti-matter decays in a matter environment. That would be good too. Somehow, though, I feel like the humanoid object becoming better is about as likely as murder ceasing to be a problem in the world, so… maybe go with the axis solution. Satire about the humanoid object. Original stuff.