Anyone else getting really bad framerates in the World Editor?

Title.

Also, when in full-screen, every time I open the World Editor, it kicks me to my desktop; is that normal?

 

Read the logs. It sounds like a mod is causing trouble.

 

I have the same issue, feels like the world editor doesn't really like me using 2k resolution on a 4k screen. It wants to change the resolution whenever a menu goes slightly ”off-screen”