For those who are unaware of this, if you notice frequent inexplicable crashing - find the NV equivalent of FALLOUT.INI.
Under the [General] Section, add or modify to this:
iNumHWThreads=2
EVEN if you have more than 2! The problem (in FO3 at least) was that it had 'issues' using more than that. Setting this to 2 when you have only one core might do nothing. If you have more than 2, it caps it, and fixes (that) bug.
