I pick Aeroworx B200 and KBOS (default) to reproduce the problem but it happens with other aircrafts and airports too. Sim runs smoothly all the way down to the runway, but as I slow down and roll out on the runway (reversers on) a series of shutters ruins the smoothness. I replayed the same landing and same shutters happen at the exactly same moments.?Since AI planes don't show in replays, I guess I can rule them out as the cause.?I also tried lowing a lot of settings while replaying the same landing over and over again.?Exactly the same shutters no matter I am in 2D panel or outside view. I removed the whole Forcefeedback section in the aircraft.cfg.?Same shutters happen on landings. Is this a known issue with a cure? Thank you, Jason

Hello,Did you try after "unchecking" the Force Feedback in FS?

Try this:If you're running any memory managers, disable them.Not sure if you are, but it's worth a try.Bryan

Also make sure you don't have duplicate AFCAD files for KBOS. I've had the same problem in the past, removed the 2nd AFCAD (one I was mofidying) & my stutters went away.Jim

Try moving global textures to one notch below maximum.

Thank you all for your replies.The whole Joystick Force button is gray in my sim. I don't know anywhere else in the sim that has the "ForceFeedBack" option.I don't use memory management program. I do use FSAutostart but I doubt it really manages the memoryI don't use any addon airport anymore. So I can't think of a possible place to look for a duplicate AFCADGlobal texture is set to High, not maximum.I did a bunch of low flyby while trying different option settings. (weather, AI, senery density, Autogen, etc..etc..etc) I get the shutters everytime I fly by the runway (50 feet, no touch down) UNLESS I turn AUTOGEN completely off. I remember these shutters happening to me at Dulles airport as well. Now BOS. But never at SEA or SFO or LAX. So it's location specific. But why Autogen? I use the resized autogen textures found at AVSIM, which is supposed to be easier on FPS. And I deleted the defaul.xml file in autogen folder long time ago. Any thoughts? I appreciate it.Jason