Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. GL_RENDERER = GeForce GT 730/PCIe/SSE2 GL_VERSION = 4.6.0 NVIDIA 390.87 GL_VENDOR = NVIDIA Corporation VisualID 39, 0x27 302 frames in 5.0 seconds = 60.337 FPS 300 frames in 5.0 seconds = 59.955 FPS 300 frames in 5.0 seconds = 59.957 FPS xwininfo: Window id: 0x8600002 "glxgears" Absolute upper-left X: 4 Absolute upper-left Y: 60 Relative upper-left X: 0 Relative upper-left Y: 0 Width: 300 Height: 300 Depth: 24 Visual: 0x27 Visual Class: TrueColor Border width: 0 Class: InputOutput Colormap: 0x8600001 (installed) Bit Gravity State: ForgetGravity Window Gravity State: NorthWestGravity Backing Store State: NotUseful Save Under State: no Map State: IsViewable Override Redirect State: no Corners: +4+60 -2816+60 -2816-690 +4-690 -geometry 300x300+0+32