Yeah, I ended up buying a new computer (that could just barely run CoH) because the one I had was a .2FPS slideshow during combat. When I came back to Homecoming I set everything to max just out of curiosity... and, wow.
Though I am finding the start of the wedding mission or a Rikti invasion sometimes turns into a bit of a slideshow, but that much going on in that small a space is something of an anomaly.