Dakpilot Posted January 28, 2017 Posted January 28, 2017 From TweakGuides, who know a lot more than me "There is however a more fundamental problem with enabling VSync, and that is it can significantly reduce your overall framerate, often dropping your FPS to exactly 50% of the refresh rate. This is a difficult concept to explain, but it just has to do with timing. When VSync is enabled, your graphics card becomes a slave to your monitor. If at any time your FPS falls just below your refresh rate, each frame starts taking your graphics card longer to draw than the time it takes for your monitor to refresh itself. So every 2nd refresh, your graphics card just misses completing a new whole frame in time. This means that both its primary and secondary frame buffers are filled, it has nowhere to put any new information, so it has to sit idle and wait for the next refresh to come around before it can unload its recently completed frame, and start work on a new one in the newly cleared secondary buffer. This results in exactly half the framerate of the refresh rate whenever your FPS falls below the refresh rate." http://www.tweakguides.com/Graphics_9.html As for G-sync, it does not work above your monitors refresh rate, which is why I said in this instance it is better to operate at FPS below max refresh rate or you are getting no benefit from this tech, you will still get screen tearing at FPS above it, the whole point is to give smooth play below refresh rate without the need for Vsync by having a variable refresh rate monitor, obviously you cannot have a variable refresh rate at FPS beyond what the monitor is capable of doing Cheers Dakpilot
=TBAS=Sshadow14 Posted January 28, 2017 Posted January 28, 2017 Never had that except in stupid games ported from consoles that are locked to 30fps.also that would highly depend on a bad cpuJust force Fast sync.i get 55-75fps in Multiplayer and thats the real FPS sometimes i heavy spots it might dip to 45 or when i load in maybe 30.
Dakpilot Posted January 28, 2017 Posted January 28, 2017 The point is that even though it may register on FPS counter as 45 or whatever the actual FPS that you are getting with V-sync is limited by the way GU handles 1st and 2nd framebuffer, watch the vid I posted above for graphical representation and read the article which explains why you will only get half refresh rate regardless of what FPS display is showing in most instances when operating at lower than native screen refresh rate Vsync limitations has nothing to do with a weak or bad CPU Fast sync, the latest form of Vsync from Nvidia is very good in a lot of situations and has lower latency but not as smooth as normal V sync V sync latency issues are really not a problem in a combat flight sim, a solid and smooth 60fps is much more important, or whatever the max refresh rate of your monitor is Cheers Dakpilot
SharpeXB Posted January 28, 2017 Posted January 28, 2017 So Vsync functions basically like a machine gun synchronizer gear ;-)
1PL-Husar-1Esk Posted January 28, 2017 Posted January 28, 2017 My solution to "limitation of g-sync" is turning off vsync together with g-sync on. This and g-sync enabled in windowed mode is best solution in BOS for me, because when fps gets above max refreshrate i don't have input lag and surprisingly also do not have image tearing on high fps ,on lows i have them synced with monitor refreshrate. BTW I tested limiting fps just little below monitor max hz with g-sync enalbeld and i didn't like the effect - feelt lag. Same with using only V-sync where i can feel input lag. For me most important is resposnivens and fluid motion of BOS.
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