Originally posted by Behemoth
i did a little bit of research on the lens flare effect. they have a lot to do with alpha blending 2D textures and in this case the lens flares can occupy the screen to quite a large portion, perhaps fx5200 is not too good at doing heavy alpha blending work like this? but you are getting 30-50 everywhere else that is a bit strange. my fx5800 cant even get 30ish average fps but doesnt do so bad on the sun..... strange.
Whoops, forgot to mention--this was at 640