So I found a solution.
I went through every game object, one by one, and closed every component. After doing this, my game's framerate improved enough to continue developing. It seems if you have too many components and FSM's all with the drop-downs open, even if you are not using them or even looking at them, they will slow the editor down and decrease framerate as you develop your game.
So basically, if I want to mess with an FSM, I have to manually find it, open it's component drop down, then click edit. It's a pain in the ass and has really slowed down how fast I am able to work, but it's the only thing that seems to be fixing the issue.
Something else I noticed is that I can no longer drag actions above or below each other. Instead, I have to copy an action and paste it above or below the action I would like it to be near. PlayMaker used to let me just drag actions in any order I see fit. I don't know why it suddenly decided to no longer let me do this.
Anyway, hope this helps someone since nobody made any response to my original question about this issue.