This test simulates variable refresh rate technologies including G-SYNC, FreeSync, VESA AdaptiveSync, HDMI 2.1 VRR, and others.
Variable refresh rates (VRR) eliminate stutters of fluctuating frame rates, by varying the refresh rate to exactly match a varying frame rate. This VRR demo uses interpolation techniques to emulate the look of a smoothly variable refresh rate, with seamless transitions between framerates. This is good for video games with a variable frame rate, and is a popular feature in gaming monitors. Done in hardware, it also greatly reduces lag and eliminates VSYNC OFF tearing artifacts.