Hummm.....apologize for asuming too much. I don't know what to say about the jittering with that amount of power although mine did smooth out some when going from 128MB to 384MB of ram. You probably have at least that....

Just a thought........maybe you could try updating your version by logging on to the G2 site via your main menu. I have done that a few times over the past year and a half. Also, you might give the support people at Real FLlight a call with your problem.