Two Bone IK vs FABRIK

Hi, with regards to the Animation Blueprints, does anyone know which one is more computationally expensive - two bone IK or FABRIK (for the same number of bones)?

I’ve got a feeling that my game is running slower with FABRIK on but it would be nice to have a definitive answer please.

Both should be relatively fast algorithms… are you sure IK animation is what’s slowing your game down? Have you used the engine profiling tools to confirm that?

Thanks for the quick response!

I’m fairly certain its the graphics that’s doing most of the slowing down but I’m trying to optimize the animation as much as possible too.

So there isn’t much difference between the two?