'Given your system specifications I don't think you have major frame rate problems.' She runs clear and neat with everything turned up to Max using just Default scenery Bacon. The best I've clocked in 64bit in a C172 was 118fps but the average in her would be 40--75fps. But if I jump into the CRJ_200 or the heavier Caranado's it can drop pretty rapidly or settles around 25fps but 'without' the FMC. I cannot fly comfortably/smoothly under 19fps in anything! . As scenery is the 'Greatest hit' on fps & my purpose is 'Flying' rather than 'Arial photography', as much as I'm impressed by the scenery coming out & would buy it, I wouldn't sacrifice for it. I don't know whether 64bit will allow us to bump up the GPU memories or utilise SLI/Crossfire --if it does I'll wait till they stabalise v10 and treat myself to one of the newer 4+ Gb. Geforce numbers.---here's hoping--but v10 is pretty hot as she flies right now!