I also have a clean save with no mods, just after the character creation sequence, just in case, and that one crashed too. So, I disabled Pleasant UI - and it still crashed. Fixes the crashing caused by the rolled sleeves variant Fallout 4 Fallout New Vegas The powerful open-source mod manager from Nexus Mods.One of these methods will surely help you overcome the issue. This works in most cases, where the issue is originated due to a system corruption.
Nexus Mod Manager is free and open software that can help you install and uninstall mods easily. Fallout: London DLC-Sized Mod for Fallout 4 Announced With a New Trailer.