Why is V-Sync a thing?
Why is V-Sync a thing?
This might not be the right place, but since V-sync is linked to gaming, it makes sense here. Why isn’t there a simple FPS limiter? We could just set sliders so if the frame rate drops below 60, we automatically go to 30 fps. Am I missing something? Also, why can’t we just adjust the maximum FPS slider to match our monitor’s refresh rate?
Restricting the frame rate forces the display to flicker severely. More damaging than hitting 60 frames per second.
Applying a MAX fps cap still causes screen tearing, particularly when FPS falls below the limit—like setting a 60 FPS ceiling but experiencing drops to 40, which triggers VSync. Trying to match the game’s frame rate with the monitor’s refresh rate delays rendered images in a buffer until earlier frames appear, giving you 60 FPS but introducing input lag since the controlled frame might be delayed until the display is ready.
People often mention screen tearing, but the severity varies by game and engine. Some titles appear smooth at a certain unlocked speed, while others, like World of Warcraft, struggle with sync issues when moving the mouse quickly. Other titles seem poor overall. Far Cry 4 stands out as an exception. We’re seeing improvements with features like Freesync/Gsync. Locking to any desired FPS is possible via MSI Afterburner, though syncing can still affect performance in most games. Guild Wars 2 also has a 30/60 FPS limit and looks worse without it. Adjusting FPS manually in Afterburner or sync settings usually helps—except when tearing occurs. Unlocked speeds above 60 can look much better, especially in competitive play where fast mouse movement is common.
Since most games cause noticeable screen tearing, I often experience brief stutters that look like a seizure on the screen. However, I usually skip this setting during FPS multiplayer matches, except for TF2, which is the only game I play in that category.