I fired up SH4, was playing with video settings. I noticed it was unusually sluggish, so I kept lowering the effects, until it was at the low end, and it was still sluggish. So I checked my card temp, it was WAY up. I checked the cooling fan, it was dead. So I am in drydock while I wait for a new fan, on order.
I threw in an old backup card, but it can't handle the game.