I installed a mod that puts common versions of weapons that normally only have a unique variant (this machine/battle rifle) and adds a bunch of weapon mods. Harmless enough since it is the only mod I have on. I turned the mod on, and played about 10 hours without any issues, at all. Now, all of the sudden, without any changes to anything on my computer, the game crashes every time I quicksave, fast travel, or go through a door. The game runs perfectly still if I don't do any of those things, but as you can imagine, that's almost impossible.

Yesterday the same thing happened. I loaded my save, explored a little further, then went into a door, and crashed. Then I reloaded the save, went to the door, then quicksaved infront of it, crash again. But after it happened a couple times, it just stopped, and I played for about 2 hours without a hitch. But this time, it's extremely consistant and it isn't letting up. I've tried messing with my graphic driver settings, and nothing changes. Is anyone else having an issue like this?

If you didn't change anything in the game then did anything on your system change? Is your virtual memory hdd full or did you install any new media players or change any sound settings in .ini? Try with the default .ini and see if it works, if it does then you know where to start. If it doesn't then see what's running in Windows and try ending some processes and maybe list your add/rem programs by date to see what's been installed lately.

I literally haven installed anything new on my computer since I started playing with this mod. I'm not sure how to check my HDD memory, or what I should do with the default.ini