Is there a solution to this on my iMac? Technical specs are a core 2 duo and an Nvidia Geforce 9400. Symptoms are anytime there is fire or ice to be rendered or more than a few enemies on the screen the game play is very choppy and culminates every 45 seconds or so with a 4~5 second freeze-hop. I have everything graphically related set to low and am playing on the lowest possible resolution. I have the latest graphics drivers and Java. Played for a while ignoring it but now that I am in citadel the damage is adding up and I cannot play in a fine-tuned enough manner to solo reliably, so I'm kind of at an impasse.