LOD 8.5 + NGX is a sure recipe for OOM.Memory usage you mentioned in the first thread can't be measured with task manager - it has no ability to do it properly!Process explorer can. There you need to select column virtual space under memory.If you are under ORBX I suggest you go no higher than 5.5. Even 6.5 is gonna drive your FSX up to 3.85GB on the VAS.

Thanks Word Not Allowed,Thats exactly whats going on here, so thanks. I guess we're pushing the edge of the FSX envelope again because we can, thanks to the SB.Question for you though, I have an almost identical system to yours, mine OC to 4.9 but with the GTX590. I just cant get liquid fluid flow in the graphics. (stutters) My Frame Rates are locked and solid at 30fps even at Fsdreamteam KLAX with the NGX, I've tried all the Bufferpool tweaks but I'm not really sure what I'm doing there, just trying different numbers from posts without any real success. The best so far is a low poolsize of just 3mil or the same result at 200mil but with a RejectThresHold added of 98304. A poolsize of 0 just gives me artifacts. Other forums suggest starting at 200m and working the way down but the difference is almost nil. should I be aiming for a higher Poolsize and a lower reject or the other way round.Like to know how you're doin with your GTX580? thanksIM

I have removed BufferPools completely. Locked @35, smooth in all phases of flight. Water @Lowx2, Autogen @ very dense, MTX and UT2 AI traffic. The only thing I have in my FSX cfg is Highmem and FFF=.033.Also having your water set too low, say below Lowx2 can cause texture flashes. All system are different, so you need to experiment. Don't over tweak fsx. I am running 2600K, @ 4.5 GTX580 1.5 GB

Thats true, thanks ZK, its funny you say that coz I just read a post saying BufferPools are mainly for GPU instability which I dont have so maybe I was barking up the wrong tree looking for a stutter fix. Although I'm sure the BufferPools tweak was having some effect on stutters.IM

Yes, I found it did not work for me one bit and it caused instability . I am using tweakforce Nvidia driver 270.61, and swear by it. But, different strokes for different folks. Took me a long time to find the correct recipe, and that was the drivers and removing lots ov tweaks that were holding back performance instead of increasing. You will get there, once you find the correct mix that your system likes.Another thing, don't look at frame rate counter, it is smoothness your looking for, and you get better feedback from test flights than a frame rate counter. Good luck. and hope you find the sweet spot.Here is my driver settings: