I have just purchased the Quad City Challenger ultralight package (2005) from windrifters.com and installed on my brand new system.For some reason the framerates are terrible when running this addon.FPS is 4-10fps!I get 45-60fps in VC or spot view with any of my other aircraft (I tried various in the same view/situation paused to make sure it WAS the aircraft causing the problem).UPDATE!!!Problem solved. The Readme suggests removing the radio/cd player gauge if it causes system problems.The Radio CD gauge is named wrongly in the readme file. The actual guage name is RADIOCDQ.GAU (not RADIOCD4Q.GAURemove it if you have any fps probs and it should fix the problem.Now getting 60-70fps in VC and over 100fps with UK VFR SceneryFabulous little aeroplane go get it:DCheersAdam

"Now getting 60-70fps in VC and over 100fps with UK VFRScenery"LOL, crank up your sliders and turn on some real weather, it'll add to the experience! :( :-lol Regards, MichaelKDFWhttp://www.calvirair.com/mcpics/mcdcvabanner.jpgCalVirAir International

That IS with all the sliders up!+ GA TRAFFIC 80%+ UT2004 100%+ ACTIVESKYYes I'm boasting:PCheersAdamAdam Moorewww.simreview.co.ukWin XP - ARIA 3200PCPrescott 3.20 GHz - 2GB RAMAsus ATi Radeon X800 Pro TD 256MB19" CRT 1600x1200 @ 100hzAudiophile 24/96 Audio