Problem with mass edits in Editor

I'm having a problem with editing multiple players/clubs/etc in one selection as the editor just stops to load the change and it will take several minutes, if the change even occurs, to implement the change.

With previous FM editors I've been able to do this in seconds with no problems (on the same PC) but now I'm having difficulties.

I'm not sure if it's just a technical problem on my computer's end with something malfunctioning or it's the game itself but I'd like a fix for it somehow.