it runs stable on my machine (I7 3770k at 4.7 GHz, H100Watercooling, Geforce Titan). but please!!! don't just copy and paste the fsx.cfg. My graphics card is different from yours. My screen is different. So use the values please, but don't copy the whole thing and wonder why your fsx doesn't work anymore. thx
what you should have to run fsx smooth with 30 fps:
I7/I5 at 4.5 GHz or above
nvidia gtx 670 or above
fsx on SSD
Remember to save standard flight as an original aircraft from fsx, no addon. it´s important!!! bufferpool=1 is perfect for fast hardware. Don´t believe anything else! FTX Global is installed as well as REX ess.OD and Mytraffic X Professional with 30 % traffic. Save fsx.cfg and make a backup before trying my settings. Remember to turn hyperthreading off in the bios. Set to use only 3 cores there as well.