Given that we all fight the good fight on this, I thought I'd share a success story. First, the system.Socket 478 3.2 Ghz P4Radeon 850 XT PE (AGP)MSI 865 based motherboard2G ramCrappy old Seagate P-ATA drive (the weak spot)2 monitorsRunning ActiveSky, FSNav, Speechbuddy2My basic problem was the one we all have - when I cranked things so they looked good, various blocks would be very blurry. Eventually I got it so that they we're OK, but they would take a long time to "pop" in, and often one's right up close would stay blurry until I was almost flying over them - very distracting.First step, noodling with my FS9.cfg, here's where I got.[DISPLAY.Device.RADEON X850 Series .0]Mode=1280x960x32PanelAsTexture=0TextureAGP=0[DISPLAY]UPPER_FRAMERATE_LIMIT=30TEXTURE_BANDWIDTH_MULT=400[TERRAIN]TERRAIN_ERROR_FACTOR=100.000000TERRAIN_MIN_DEM_AREA=10.000000TERRAIN_MAX_DEM_AREA=100.000000TERRAIN_MAX_VERTEX_LEVEL=20TERRAIN_TEXTURE_SIZE_EXP=8TERRAIN_AUTOGEN_DENSITY=4TERRAIN_USE_GRADIENT_MAP=1TERRAIN_EXTENDED_TEXTURES=1TERRAIN_DEFAULT_RADIUS=9.500000TERRAIN_EXTENDED_RADIUS=4.500000TERRAIN_EXTENDED_LEVELS=3I also turned off Lens Flare, for no particular reason.This was basically OK - I was getting decent frame rates except at some places like Bradfield Fisheries at Misty. But the popping textures was really annoying, especially when flying in the mountains.Then, the secret sauce.http://www.omegadrivers.net/ati/win2k_xp.phpOmega Driver 3.8.221 Released 1/18/2006All I did was remove the ATI CCC (as suggested by Omega) and installed these drivers. I selected Fastwrite off (as suggested during the install) I went to it's tray tool, set 4X/8X AA and AF, turned on Adaptive AA and HQ AF.Tada! Everyonce in a while I will get a little pop, but 95% of the time, flying around between 4000 and 15000 feet, its just perfect. Framerates are 20-30 depending, which is livable. I'm hoping that FSX spends a little more time figuring this out, but in the meantime, I can live with this, which is an improvement.

I havn't got a system like yours but am downloading the drivers as we speak. I get those squares also.AMD 3500ATI Radeon 850XLbla bla blaJimCYWG

...turned on Adaptive AA...If you get artifacting that looks like your GPU is dying (random triangular shapes while in a game) try disabling Adaptive AA. You should even disable it in the Advanced Registry Tweaks section of ATI Tray Tools.Regards,Greg