One thing that I have noticed is the OpenGL and rendering system in CS seems to be much better than HL only. I know that seems funny since CS is HL!
I have noticed that I load up a HL deathmatch game like on Bounce and my FPS will vary from 100 to 60 FPS depending where I am on the map and where I am looking. There are also sparkles and white dots on many places throughout the map. But, I can load up any map in CS and no matter where I am at on the map or where I am looking, my FPS is always at the max (99-100 FPS). And there are no visual defects like the white dots on any of the CS maps. It seems like CS runs smoother than HL.
Is the reason for the different FPS purely a function of the map? Why such a difference? I know that it is not a real good comparison since I am comparing FPS from 2 different maps, but CS seems to better and faster in OpenGL mode than HL only.
BTW, I am running a Leadtek 32mb GTS with the 7.58 drivers.