Now I'm out of my depth! I'm not really familiar enough with computers in that respect, but maybe you should look at your textures and see if you can reduce the quality, like turning off mip-maps and save as a smaller size. this works for me but like I said I use FS9 and as I understand it the textu...

I'm by no means an expert, but I get something similar in FS9. It happens when theres quite a few AI or objects around, when you start to pan around it takes awhile to load up the different textures, altough in FS9 they appear grey instead of black because thats the base colour of the model you see ...