I just got my new PC last week, installed FSX per Nick's guide and added only the tweaks he mentioned + the highmemfix one.  Everything looks outstanding and runs smooth, but I get white or black flashes every once in a while on various parts of the terrain or sky and only for a split second.  I'm guessing they're artifacts?  I haven't done the Nvidia Inspector install/tweak yet, but will that help or is there another way to eliminate them?  They don't happen often or for long so I can live with them if need be, but I'd rather not.

I have an i7 2600k @ 4.4 gHz (HT on) and a GTX 570 if it mattes.

Thanks in advance.

I have that checked off because it said it fixes an Nvidia glitch in NickN's guide. 

I narrowed it down to only appearing when using inspector though.  I'm working on it with some guys on Avsim, but if anyone here has experienced this and would like to chime in with a fix I'd appreciate it. 

It seems no matter what combination of settings I do, they appear.  I'm curious if something in the Bjote tweaked .cfg could conflict with it.  If needed I'll post my graphics and display settings from the .cfg here.