Whels....if this is happening with the new patch don't worry about it.
It's the new vid code methinks.
Many many of us are having the same problem. It's not the vid card.
You and I running similar systems I believe. I'm using an X800XT all in wonder with 16 open pipelines, top of the line AGP Card. Also have two gig of corsair memory. Soooooooooooo. Not to mention 4000+ Clawhammer CPU.
Definately has something to do with the new release. Tracers? Terrain? Dunno but something is hacking away at the framerates of about 90% of the players in Aces High since the new patch.