Hi Guys,I hope this is not redundant but after working all night on the settings I found for myself that the greatest gain for fps, blurries, etc. was the LOD setting. I had moved all of my sliders back to about medium except for this one trying to get my single core, 8300, with a AIW x800xt 256 graphic card and 4gigs of ram to kick in and up.:-abduct Everything else in the gaming world flies on it. Hee Hee :-ukliamI then moved my LOD from Max to Small and the whole system came alive. The frames jumped way up, within reason of course, and the blurries and stutters stopped. I then put my scenery density and autogen to max and the system held without change. I brought up AI traffic, gen and airline, to 50% and only lost about 5FPS. I am running MyTrafficX. The system is running generally at 18 to 25 FPS at this time. This is the best FSX has ever performed for me.I have not seen any noticeable difference in scenery quality with the LOD set to small, but what a difference in performance.I am going to continue testing, if I don't fall out of my chair from exhaustion, in more areas but so far I think I have found the kicker for me. That one move LOD may have saved me $5500.00 and bankruptcy 'cause that was my next move. :-sword Gary

See my other post for details... I found that the default LOD_RADIUS settings in FSX are like uniform sizes in the military, two sizes: "Too small" and "Too big" : - )On my machine (P4-2.8, 1 GB) the "medium" setting LOD=3.5 gave me detail textures only right under my airplane, and the "large" setting LOD=4.5 choked my machine, like you described.By trial and error, I have now set my LOD_RADIUS to 4.0 and everything is pretty good!