I'm somewhere in the middle between not happy and definately happy. For one, those are some great features and design that went into this sim. But the ATI Radeon HD5870, wich I also have, does struggle. Like you say, it is not really that much dependend on the resolution. I also gain minimal when turning it down. Biggest effect against FSP is shadows (I won't use Global shadows), HDR (but only in 3D cockpit view), water effects (I'll use very low) and Clouds (lowered it to 10%). The HD5870 seems to handle it very well to display a large amount of objects (buildungs, streets) without too much impact. I have forests now at "filled in", as buildings and streets are much more required to make up the "plausible world". With lots of buildings and the like, it is obvious that this is a beautiful sim. It is even better around smaller cities in the demo region, where the housings and bridges and smaller streets really make a perfect impression. So here's my plan: - stop the trial and error with the demo. I have a good impression about what to expect now and I know I will be able to find settings that I can live with, although those won't be the ones I may have dreamed of. - will wait now for Aerosoft to finish their version, hopefully including a 10.1 or even 10.2. don't wanna go crazy with the bugs now. the release canditate/beta status is very obvious. - get me a graphics card update, some next gen AMD/ATI, as soon as they are avaiable sometime in 2012 (and fit into the Mac Pro). I want that HDR. I want those global shadows. That's for sure and worth an upgrade. Meanwhile I keep my fingers crossed for an early X-Plane 10 64-bit. Yes, I already had my first "Xmapped out of memomory" with version 10. Good old friend, still around . But please, I am curious, because I don't exactly understand: Do we use HDR with volumetric fog and per pixel lightning, or does it replace those, make them unnecessary, like it does with the standard anti aliasing?