I get the same slowdowns, it's been like that for a while now and even occurs on my Core2Duo E8500. I am in agreement that it seems to not have anything to do with complex geometry, there are some better looking games with little to no slowdown.
It's probably the normal overhead in the buggy/incomplete graphics rendering that causes the slowdowns, not necessarily because the scene is more "intense".
It's probably the normal overhead in the buggy/incomplete graphics rendering that causes the slowdowns, not necessarily because the scene is more "intense".
