We think we might know what is causing this, but this is just an educated guess. We notice that performance is actually quite high as our evaluation begins. However, once we come into contact with our first civilization and are greeted by them in the leader screen, once that whole discussion is over with the leader the performance drops severely as you can see around the 46 second marker, and then it just stays there and never recovers. It seems that maybe the leader screen is killing SLI and it just can’t recover afterwards.