There is a switch in setting which allows you to disable installed dl mods. It worked fine in TSW 5 but in TSW 6 does not seem to work. My mods are installed at this location, C:\Users\xxxxx\OneDrive\Documents\My Games\TrainSimWorld6\Saved\UserContent instead of the dlc location. They work fine when in this place and, in TSW5, it was the usercontent area that the switch disabled. This is very inconvenient, since having to disable your mods to check if it is them causing a UE crash is harder, but not as hard as when they are installed in the dlc folder. I check to see whether it does disable by GodMode, is it still there or not. In TSW5 it would be disabled, in TSW6 it is not. Cross posted in Troubleshooting and issues.
