1. using 4gb_patch utility apply to FalloutNV.exe. (allow game to access 2+ GB local memory speace, if you running XP SP3 PAE mode or Windows 7 64-bit)
2. FalloutNV.exe setting to "XP SP3 Compatible mode" if your system OS is Windows 7 (32-bit and 64-bit)
3. nvse_loader.exe setting to "XP SP3 Compatible mode" if you need NVSE mod and your system OS is Windows 7 (32-bit and 64-bit)
After long test, seem the CTD is rare occur then ever.
EDIT:
forget 4gb_patch utility homepage:
http://www.ntcore.com/4gb_patch.php
