Richard Bytheway schrieb: > <snip> > >> After I had fixed the worst stuttering by always running FlightGear >> > with "vertical sync on" (see former discussions on >this list) there was > still this stuttering left which you all describe as "framerate > hesitations". > <snip> > > The thing about running with Vsync on is that you will always get 60fps > (say) unless each frame takes longer then 1/60s (16.6ms) to prepare, > which will cause a dropped frame as a minimum, and running at 30fps or > 20fps if the interruption is longer. Even if the frame update time is > 17ms (58.8fps) you will only see 30fps on screen. > > Even one or two frames at half your regular frame rate will look like a > stutter. > > If you are running with a high refresh rate (100Hz, 85Hz) you may want > to reduce the refresh rate to 75Hz or even 60Hz to see if it reduces the > stuttering. > > Richard > > > Hi Richard
first thank you very much for your answer. But I don't think the "vsync problem" is causing the "framerate hesitation problem". I just mentioned it in my answer to show that FlightGear has/had several different problems which cause display stutter problems. I am not able to analyse only to report. But it seems to me that something is making this trouble which is called very regularly by a timer (nearly every second) and makes variable delays depending on other tasks, ie. AI manager or loading process of scenery objects. My shouting of "me too" was only to confirm that there is a serious problem for *many* FlightGear users - at least for those who put some more workload on the FG system (ie dense scenery, AI, multiplayer or something like that). Best regards Georg EDDW ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
