Originally Posted by Ohnnyj
Great article and very informative, thanks for taking the time to do this. I wonder if you have a problem that I am having with my dual 6800GTs. In HL2 at certain times the frame rate will drop as if it is only using one card but if I do a quick save then reload from that save it will kick in SLI and I will be doing at least twice the performance. As an extreme example when you are unsuccessfully transported from Kliener's lab and end up outside. If I turn around and view the electrical structure behind the lab the frame rate is in the 20s but if I do a quick save and then reload I am at 100+. There are other instances where this occurs as well and it is kind of annoying since you never know when SLI is truly working or not.
I had this problem. But it happened in single and SLI mode. Just reloading the level fixed it.