Editor insanely slow after trying to implement AI

Hi,

I needed a way to check if a calculated path is valid or not, so I created a pawn class as a testing actor and other AI related stuff(Behavior Tree, Blackboard, AIController).

What was strange is that the simple AI system I created didn’t work. The behavior tree never got active during runtime and blackboard values kept disappearing. I was positive that I didn’t do anything wrong so I copied the related contents to my colleague’s computer and migrated them to a clean project. There, it worked perfectly as I intended.

The problem begins here; I chose not to bother and came up with another way to check validity of a path. However, after I deleted the Pawn, the Behavior Tree, the Blackboard and the AIController that I created for the test, the editor got INSANELY slow. It takes usually 20 minutes to open a single actor class, which never happened while I was working on this project.

I have no idea what is going on here so I can’t really ask for a solution specific to this case.
I was wondering if anyone experienced anything remotely similar to this. And if so, maybe offer me some information about what they went through and how they dealt with it.

Thanks in advance.

Cheers.