Not wishing to throw too many spanners into the works you might find the following of interest http://mikeandclaire.co.uk/JHB/SLI_test.htm I do not have 'Acceleration', I simply have installed the recently released SP2 patch into a clean installation of FSX but WITH the GenX scenery already installed. I have used Paul's FSX display settings (ie most sliders maxed as below). The view shown is windowed, my full-screen results are not so good. The PMDG 747X, incidentally, is spectacular ... I put this forward as an example of how FSX is currently running on my system, PLEASE don't take any of this as gospel, it is still early days and I cannot yet offer any of my findings as definitive. M. -----Original Message----- From: jhb_airlines-bounce@xxxxxxxxxxxxx [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Reynolds Sent: 18 December 2007 15:07 To: jhb_airlines@xxxxxxxxxxxxx Subject: [jhb_airlines] Re: FSX SP2 I've been running the Acceleration pack for a few weeks and generally I'm impressed. I'm getting stable frame rates in the mid 20's. I have to say that I think we're in that phase where the real benefits are yet to be realised. OK so there are backward compatability issues but, I'm led to believe, these are where designers have deviated from the FSX SDK standard. OK so this is really irritating if, like Gerry, you have designed scenery which is running OK but then throws a wobbler when the software is patched. I can understand how frustrating that is but I think these are teething troubles that as SP2 settles down we'll leave behind us. Gerry's issues of incompatability with SP2 are because of elements being combined using drag and drop software for placement. As he has only have partial control over the initial design elements, any problems with those not specifically designed by him can cascade down causing problems with the finished product. Where he is controlling the design, he can update to account for changing standards. Actually I find it interesting that as Aces design FS11 they've already indicated they do not intend to support backward compatability. So any hopes of designing work to carry over is dead before it's started! Or is it? If any design you do moving forward is done on a modular (object orientated) basis it should be relatively easy to update to reflect changing standards. For those who wonder how I'm getting the stable mid 20's frame rates, here's how my set up using the 8800GTS: Within FSX: Graphics: Frame Rate : Unlimited Global Texture : V. High Lens Flare : On Light Bloom : Off Avanced Animation : On Info Text : Continuous Filtering Annisotropic (see Graphics Card settings below) Anti-Aliasing : Off (see Graphics Card settings below) Aircraft: Set Ultra-High 3-D Virtual Cockpit : On Aircraft Casts Shadows on ground : On Aircraft casts shadows on self : On Aircraft landing lights illuminate ground : On Scenery: Level of detail Radius: large Mesh Complexity: 100 Mseh Resolution : 1m Texture Resolution: 7cm Water effects: Max. 2X Land Textures : On Scenery Complexity: Sparse Autogen density: Sparse Ground Scenery Shadows : Off Special Efects Details : Medium Weather: Cloud Draw distance : 60mi/96km Thermal visulaization: Off Detailed Clouds : Maximum Traffic: Airline Traffic: 7% General Aviation: 7% Airport vehicle density: minimum Road vehicles: 0% Ships & Ferries : 15% Leisure Boats 15% Other graphics settings (set outside FSX): Anti-Aliasing : On, Supersampling 4xS with Gamma Correction Anisotropic Filtering : On, 8x Texture Quality : Quality Trilinear Optimization : On Negative LOD BIAS : Clamp Paul -----Original Message----- From: jhb_airlines-bounce@xxxxxxxxxxxxx [mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of franklyn fisher Sent: 18 December 2007 13:43 To: jhb_airlines@xxxxxxxxxxxxx Subject: [jhb_airlines] Re: FSX SP2 Somehow I do not think that SP2 is the culprit. It has to be something else on his sytem triggered by it. I have been running SP2 for 3 days now, with narry a problem. FF