   Optimize BackGround
  In my option screen there is a picture for the background... which is textured to vertices. Then i came to realise having a background affects your fps greatly.... So is there any best combination to use for background like erm.... file type? jpg? bmp? or any resolution of the pic should be to make the rendering more efficient? 
  you would have to change the size of the image on screen.changing the resolution in your image editor program wont matter.  changing the size of the texture wont matter.  and changing the type of image file (bmp, jpc, etc..) really wont matter.just chaning the amount of area it covers on the screen will matter.  so either reduce the area it covers on your screen or drop to a lower resolution for your game "A soldier is a part of the 1% of the population that keeps the other 99% free"  - Lt. Colonel Todd, 1/38th Infantry, Ft. Benning, GA ;Yea if you wanna see just how much it really does matter, load up your game in windowed mode, you dont really have to draw anything if you dont want. Check the fps at the normal size, scale it bigger.. whoa,  scale it way tiny,  WHOA.. 