First things first, I overclock my card, GTX 680. I have it at 140/450. Any game I play, including BF3, its stable for hours, no issues. In FSX however, right when I start a flight, the screen stutters for a second or two, I can see in Evga Precision X tool the core clock goes down to 535Mhz and stays there forever until I restart my PC. This obviously reduces my FPS by half. I run Furmark, Heaven, 3dmark for 2-3 hours stable with these OCs. I tried reducing them, if I reduce them to ridiculously low levels, then it is fine. I have Bufferpools and poolsize all set to 0.

Did you set your "Power Management Mode" to "Prefer maximum performance" for FSX?

This is exactly what is happening to me:

 

http://forums.whirlpool.net.au/archive/1986037

 

But the funny thing is, I have Precision X open in my other monitor and FSX does not even come close to utilizing the full 100% power of the card (the core clock never exceeds 950-1000 Mhz) let alone the overclocked speeds. While playing BF3, I can see precision X maxing out to 1254/1175 Mhz constantly without a drop for hours. With FSX the game starts, clock speeds reach to 900-950ish and bam they drop to 535 and stay there and I have to restart my computer to go back to the regular speeds.

 

Did you set your "Power Management Mode" to "Prefer maximum performance" for FSX?

 

No I did not, I will try that now.

 

Thanks

That's because FSX is so CPU bound, on default settings high end cards are so underused. You need to download nVidia Inspector and set it up to crank up antialiasing, especially SGSS (Sparse Grid Supersampling)

 

http://forum.avsim.n...-guide-for-fsx/

 

Scroll down to Settings Nvidia Inspector:

Oh wow, how can I thank you? You have just made me so happy. Not only my crash is gone, but my graphics look so much better, not to mention my FPS went up by quite a lot. I am getting constant 30 fps flying above chicago downtown area (spot view - VC is around 20 fps), and flying around mountains with lots of trees (autogen max), its constant 50-60 fps (I set my fps limiter to unlimited). By the way, I did not set the AA/AF values to what was mentioned in the guide, I selected the maximum possible (32SS and 16x and 8ss sparse grid). But the graphics look so lively now. And FSX is fully utilizing my overclock in certain areas.

 

Anyways, thanks a lot, I appreciate it.

32SS and 16x and 8ss sparse grid

 

That's gonna be a slide show in clouds.

Oh, Thank Word Not Allowed, not me. He put the guide together.

 

Check all the pinned topics both in this section and also here as you may find some other useful stuff

That's gonna be a slide show in clouds.

Oh, Thank Word Not Allowed, not me. He put the guide together.

 

Check all the pinned topics both in this section and also here as you may find some other useful stuff

 

Strangely, it is not a slide show. I get pretty good frames and I use REX.