I'm using Vortex. I though my ini files were located inside my Skyrim special edition folder (E:/jeu/Steam/Steamapps/common/Skyrim Special Edition and so on and so on), but I've just noticed there is another files, in C:/user/hank/documents/my games/Skyrim Special Edition... Actually, I only saw it today thanks to Bethini. And indeed, there is a subfolder Bethini Cache, but the subfolder named "before bethini" is empty... I'm guessing that's a big part of the problem ? I tried to use modwatch to post my modlist but I have the feeling it is not compatible with vortex, right ? Anyway, as I said, I managed to keep playing (with a few ctd from time to time) by using medium preset, and reducing from the ingame display setting the depth of fields, actor, object, item and grass fading distance. I got the impression that my problem have more to do with the fact that my laptop is 8 years old (I actually bought it to play skyrim) and the Reach/markarth zone has always been a buggy part of all my playthrough for some reason... But, man, thank you so much for taking the time to answer me ;)