Hi,Not sure if this is the correct forum as I did not have a CTD but I might as well have had one. First off I am flying with the NGX and fs2crew into Imaginesim KLGA. I did along time ago have a G3d.dll crash flying into this airport around the same point over Philly during dusk/night but have since upgraded to the latest FSUIPC and have had no problems. Anyway, and this may be important, this is my 3rd flight using "usepools=0" in the Bufferpool section.So there I am, sun just went down. As I popped up the fs2crew main panel all the clouds around me flashed a brilliant technicolor. It looked like lightning but it was not. Then, my FPS went from the usual 25 to 5. I tasked out and back in, still at 5. Then I tasked out and checked my cpu, all was normal. Then I opened up GPUZ and noticed the use % was at 95-99. FSX never goes above 55% on my GPU. So this was the problem. I exited the sim and then loaded up another flight and still the same 5-8fps. After rebooting all was back to normal.The weird thing is that even though something caused the GPU to max out and get stuck, there was no heat, and subsequently no fan increase. The fan is throttling just fine normally. Weird.So I am running this usepools=0 and have since changed to using a reject threshold, I have not had time to test further.I may have narrowed it down to 2 things.1. Imaginesim KLGA (remember I had a g3d.dll crash before around the same location 130nm out)2. The usepools=0 (I thought if this did not work for your card you would get a CTD lockup and not what I got.) However there was somnething that effected the driver which required a system reboot.Any ideas?Thanks

Any ideas? I see you have your GTX overclocked. I have tried overclocking mine too and got frequent crashes so removed the overclock and things worked great again. I don't use the "tweak" usepools=0. In addition, I have a feeling your settings are set too high.Best regards,Jim

I don't suppose I need the OC with FSX anyway, right?

I don't suppose I need the OC with FSX anyway, right?

Not the GPU. FSX uses the CPUs more than the GPU (in FS9, that was the reverse). So any overclocking of the CPUs will be more beneficial to FSX.Best regards,Jim