So recently, at random, almost everything I've been running in Fusion has had its framerate bogged down to around 20-25. I have no idea what is doing this. I recently upgraded to Fusion and everything was running fine, until randomly (I can't in emphasize how random this was) everything started being choppy.
I decided to open up some old builds of previous games I've developed to see if it was just my recent build. Everything was choppy. Then I opened up some very old builds of Sonic Worlds. They were choppy.
Then I opened up MMF2 again, and reopened up all this stuff. It Ran smoothly.
Any ideas? It ran fine in Fusion until it randomly started bogging down after a test run. I can provide links to the MFA's if needed, but since it's happening with everything I have, I'm not sure how much help they'd be. I may boot up a VM later and see if it happens in there too.
(Also long time lurker, and I've been using Clickteam products for years now, so I'm desperate )
EDIT: Forgot specs of the PC too in case it matters
16 gigs of memory
Two NVIDIA GeForce GTX 660 Ti's
EDIT 2: also, the builds run fine. Just the editor itself seems to have the problem.