So one other piece of evidence about the fps drops, I noticed it is only when the ground is in view. If you walk around looking straight up these massive fps drops dissapear.
Anyone know what setting to fix this?
Whatever it is, people are claiming it's CPU dependent because I disabled every thing I can find and turned htem all down anyways for good measure including all shadow effects.
However these grounds and walls still show a lot of shadows in various places, although they aren't being calculated on the fly and are not from actors or moving objects. They seem to be what is causing the problem.