So...
I've been playing Skyrim for three years, and I've never had a problem like this.
The fact is: for two weeks now, every time I enter somewhere with draugr or ash spawns, the fps drops insanely, except when I enter the menus where everything goes well.
The normal thing is, for example: a cave where the menu and the game are both slow for me (low-end PC).
I attach a video
https://youtu.be/D9Ut5oURSBc
1. This does not cause CTD
2. I have uninstalled and installed the game.
3. I added these and other mods that I have already deleted.
4. In the video, I am playing with the lowest graphics settings.
5. I saw that a user had a similar problem and the "solution" was to Uninstall XPMSE, but in my case it didn't work.
6. Outdoors and other areas where there is no draugr work well
7. Last point: I miss playing Skyrim
Hope you can help me with this problem.
Have a good day
sorry for any spelling mistakes, English is not my thing