More like everyone has given up
Nobody is giving up. You seem to forget that KMEM, like everything else, is sold in TRIAL VERSION. If the problem really happened to many people, we would surely have noticed it by now, since nobody would buy it anymore...
No, that's only your own assumption, because you don't want to accept the fact that you are still the only one with the problem left. This assumption is hurting you, because by continuing to assume the problem is caused by KMEM, you are not finding what the real cause.
Again, the fact is happening at KMEM (which I believe this would be your next reply), it's only a symptom that your system has a problem that can only appear on a scenery that uses your video card more than the average scenery does.
Which is obviously an indication of how GOOD it is. CPU-bound sceneries might be more resilient to your video card quirks and bugs, but they are something for the past century, and you pay this dearly, with fps that do not go up, regardless how much hardware you have.
I also don't think running the old standard FSX from 2007 is a very smart thing to do in 2016. Not many 9-years old games runs correctly on the latest OS and video cards.
If you don't want to upgrade to P3D (which would be MY suggested course of action, since is SO MUCH better), at least consider updating to the *current* FSX version, which is FSX:SE.