Blur Busters Forums

I have read from several sources that with conventional Vsync, although the displayed FPS is 60fps, at maximum, the real fps you get is only 45fps or lower because of added frametime.

However, recently I have tested my monitor with either conventional Vsync + FPS cap at 60 or Gsync compatible enabled, I got the same frametime of 16.7ms, which should translate into 60fps/Hz. Which means with either Gsync compatible or normal Vsync, I get the same result.

Am I missing something? What is the advantage of Gsync/Adaptive sync in this situation?

I monitored frametime with RTSS which came bundled with the latest version of MSI Afterburner that was updated a few days ago.

botuelam wrote: ↑

29 Apr 2023, 05:10

I have read from several sources that with conventional Vsync, although the displayed FPS is 60fps, at maximum, the real fps you get is only 45fps or lower because of added frametime.

That's not true at all. Surely you must have misunderstood something. Vsync will not lower your frame rate, nor your frame times. What it will do, however, is increase input lag if you don't cap your FPS. (On a 59.94Hz display, which is the typical refresh rate of most 60Hz display modes, you'd need to cap FPS to 59.93 to cut down on vsync lag.)

And of course vsync can't fix the jitter issues when FPS is not stable. Whether you enable or disable vsync, if your FPS doesn't match your refresh rate, you will get jitter. VRR (gsync or freesync) fixes this by synchronizing the display to the game (instead of the game to the display.) This also means that when you cap your FPS, you have complete freedom to cap to whatever you want (as long as the cap is lower than the refresh rate.)

Also, VRR displays usually have a higher refresh rate than just 60Hz. Which means even lower input lag even for 60FPS games when using g-sync. On a 144Hz display for example, you enable g-sync, then make sure the display is running at 144Hz, and just cap the game to 60FPS. The result is both smooth animation without jitter as well as very low input lag.