memory load very high

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Anyone else seeing this, i cant run the 747 with other addons, the memory load very high 1250 mb, thats more than 400mb more than the PMDG 737 or LDS767 on my system. My ground textures is not loading at all and fps is down to 5-10 when flying in USA with UTUSA and AS5. I tried messing with the FS9 config settings, now i set them to these, but it didnt help at all. I run FS9 at highest settings with other advanced planes like your 737 and lds767, so it must be possible with this one too. Moving sliders to the left is not an option as im not willing to sacrifice how FS9 looks just for one plane, any ideas.O H NielsenMode=1600x1200x32TriLinear=1[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=19TERRAIN_TEXTURE_SIZE_EXP=8TERRAIN_AUTOGEN_DENSITY=2TERRAIN_USE_GRADIENT_MAP=1TERRAIN_EXTENDED_TEXTURES=1TERRAIN_DEFAULT_RADIUS=40.000000TERRAIN_EXTENDED_RADIUS=60.000000TERRAIN_EXTENDED_LEVELS=1307992[sCENERY]IMAGE_COMPLEXITY=5DYNAMIC_SCENERY=1DYN_SCN_DENSITY=5DAWN_DUSK_SMOOTHING=1SUNGLARE=1LENSFLARE=1