PC details: AMD Phenom™ II X4 960T Processor 3.00 GHz AMD Radeon HD 6700 series 8 GB of RAM more then enough to be able to run this game.

I've ran it with 0 mods and its super laggy at base, it auto detects ultra high and runs at like 30fps not fighting anything(like 15 fighting) I set it to low and it runs at like 50 fps (15 in fights). Im just at the first fight against the gang if you protect whats his face.

I've tried:

"Stutter Remover"

"4GB Fallout New Vegas"

"Better Game Performance V5"
"Alternate D3D9 fix for ATI plus D3D9Gen"

"Nvidia d3d9 perf fix "

This: "In fallout.ini
Find the line: bUseThreadedAI=0
change it to: bUseThreadedAI=1
Add another line after it and insert: iNumHWThreads=2 (or 4 for quad)"

And I have tried more but I have been at it for 3 hours so I cant think of everthing :/

I didn't have any problem running Fallout3 :/
Dont know what else to try, any help would be appreciated.