I see a precis of the tweak is pinned in the Avsim FsX forum... http://forums1.avsim.net/index.php?showtopic=281538
Saves reading the entire thread to extract the meat.
Thanks for posting this link, Roger. This is the best explanation.
I have never run over 10fps in Honolulu with Megascenery and a Honolulu addon during the day.
I am running about 20fps.
Night is no longer an issue, I had problems with that before.
The best is so far I'm running with full water effects. Max 2x. I've never been able to do that.
Still have to keep Bloom off, but I can live with that.
This is really the best tweak ever.