Does anyone know if Australian Sims GlassAir III causes a huge performance hit in FSX? Regards, Randy

On my upper end system it does eat up the fps more than the worst of the stock planes.Not very bad but not very good either.Great plane though just gotta play with the settings some.Amd FX62 DUAL CORE-Raptor-7900GTX-2 Gigs HyperX TWEEKED,OCed............

Considering that the Glasair has a sandel 3308, dual 430s, and a vm1000, I think it gets remarkably good fps. The Eaglesoft Liberty has the latter two, and performs much worse. I don't agree about the worst of the stock planes, because the g1000 cessna, mooney, and baron are fps killers (in ascending order).