..yes..thats ok JFK..what I'm trying to say that it was just testing of my video card, but for example, 3 cubemaps with 32x32 is slower than 2 with 512x512, thats whats confusing me, even memory resources(VRAM) is much more saved in first case..and to be sure that copyrect/renderworld is not an issue, I disable it from main loop, but still leave creation of all 3 cubemap textures before main loop, and whats happen? Even i didnt update one of them in main loop (only two of them) system is same slow as in case with update in main loop...but, if I disable creation of third cubemap texture before main loop, system become very fast...point is..in both cases I didnt do third cubemap update, so why system goes down, and why is so fast with 2 cubemaps (created, not updated in main loop) even with much more bigger textures?? Whats the deal..