April 20, 20206 yr 6 hours ago, PurdueKev said: You know what Ian? I have to apologize - I gave you some ill-informed advice... or at least incomplete. I did some testing in v4.5, and in fact you are correct that enabling Vsync in the P3D menu DOES in fact make for smoother flight when Gsync is enabled. I think the key though is having the fps target set in P3D at Unlimited - that way, the sim will output the best frame rate it can, your monitor will adjust to match, and (at least it appears) that with the Vsync box checked in the sim the P3D engine will try to match the timing of frames to where your monitor is already running. There are some developers on here who know how the engine works much better who can confirm, but it seems the Vsync option inside P3D is not the same as Vsync for our monitors. Setting an fps target in the Options menu might cause the sim to try to generate extra frames to match whatever the target is set for rather than what Gsync is adjusting to for a refresh rate, which can lead to mis-timing, stutters and reduced fps. See this post and associated discussion: Locking Frame Rate You still don't want Triple Buffering set (either in the game or in the Nvidia settings), as you don't need it since your Gsync is already compensating and you don't want to add input lag. And I set Vsync to On in Nvidia Control Panel just in case the frame rates exceed my maximum refresh rate which would lead to tearing - it likely won't kick in anyway since P3D is never getting to 100fps LOL. Just wanted to correct the record since you were on the right track, and I learned something new! Yes I also did some research and read this :- http://www.codelegend.com/forums/viewtopic.php?f=2&t=698
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