I am not sure if Sim Settlement is the cause of this, but I have tried everything else, without any results. I am getting game crashes (game drops out and returns to desktop) when I fast travel to a settlement controlled by Sim Settlements and only those at LEVEL 3. I suspect it has to do with the placement of the "Fast Travel Mat" as it has occurred at the other locations, namely Sanctuary Hills, at this location I can walk into that settlement and move the mat and all is fixed. However, others like Jamaica Plain, Grey Garden, and recently The Slog, I cannot even get near these settlements without the game crashing and dumping to the desktop. I have reinstalled my game 4 times in the past month thinking it was the game, verified my video driver and direct x, run the game in windowed, borderless mode, all per Bethesda Softworks recommendations, but the results are the same. I get just so far into the game get 8 or more settlement to Level 3 built and suddenly the crashing starts. Can anyone PLEASE advise. Just once I would love to continue this game without having to rebuild it from scratch again. As a further note, the only other mods being used are a single weapons mod, a wiring mod (extends length of wires), CBBE and a couple of associated mods for CBBE. Nothing else. I do have a few plug-ins that I have disabled but cannot remove (power armor etc.) Thank you for any advise.