Hi all,Don't know if anyone has experienced this issue in FS9.In some airports and with certain aircraft, when the take-off rollout starts, the fps drops to 1, until the main gear leaves the ground. Then the fps returns to 15-20.If I make a turn to land in the same airport, all the approach is conducted with a good fps rate (15-20). When the main gear touches the ground, the fps drops imediately to 1, and so stays during all landing rollout.Any ideas are welcomeThanks in advance,macc2004

Addon aircraft? Sounds like it could be a sound issue with the ground roll sound audio. Try aliasing the sound to a different plane that doesn't have that issue and see if it is fixed...be sure to let us know!Best,sg

I've heard of that, but it has never happened to me. I suspect the issue could be sound related, since you have certain .wav files in use when moving on the ground...One thing to try--reduce sound h/w acceleration in DirectX--see if that improves things for you. The tradeoff could be a slightly distorted sound, but at would at least let you track down the issue. If the reverse is true, where sound accel. isn't maxed, go ahead and max it and try to see if the issue goes away...-John

Note that the ground rolling sound is often related to the panel, not the aircraft-specific sounds. As such it cannot be turned off using the Q key. Try using a different panel and see if the porblem persists.Misha

If you have Force Feedback enabled, disable 'ground bumps.' Good luckJaap

I had the same problem using Winxp and MS forcefeedback joystick. I disabled the use forcefeedback option fm fs controls settings and the problem was solved.nikolas