Hello, I am having the same issue in 2025. I am using UE 5.5.3. The solution mentioned above does not work for me. I’ve tried using a cube skeletal mesh and removing the skeletal mesh entirely, but the same issue persists. I normally get around 90-100 FPS. Selecting the character on certain levels causes the editor to freeze entirely; on some other levels, the FPS drops to 10-15. I tried using the stat UnitGraph, and I noticed that Frame, Game, and GPU were in red. They were each like 70-100 ms.
If someone has a solution, please reply.