It appears to be a frequently asked issue with DirectX 10 (under) Preview mode and older aircraft's models, but still no cure. Besides, of course, a payware add-on called "Addon Converter X" for FSX, which does fix the problem by converting textures 'on fly'. So, if this add-on can convert textures dynamically, I wander how we can do it by another way (say statically)?I've tried ImageTool from Acceleration Pack SDK without any success (converting DXT3 BMPs to DXT5 DDS). Does anyone have a working solution for this issue?PSnot going switch back to DX9 because of significant frame-rate loss on my system.