When you utilize the Vampire origin and open your inventory, the game starts lagging.

I think the reason why it is lagging is because of the fact that the effects that you get as a Vampire rapidly flicker in the inventory (I don’t have a video of it but essentially the effects such as night-vision are stuck on 0, making them flicker on and off constantly.), probably causing a bunch of code to turn on and off repeatedly thus lagging the game.

It isn’t game-breaking, just a tad annoying.