An increase in polling indicates that the mouse communicates more frequently every second (1000Hz = 1000 reports/sec). That minimizes the latency in theoretical input, but maximizes USB/CPU interrupts. In certain systems or on some games this may spike input processing and hitching may occur, and by reducing to 500Hz or 250Hz hitching can be eliminated. Additionally: remember to turn Windows Enhance pointer precision off, update G HUB firmware, utilize a direct USB port (avoid unpowered hubs), and save the profile to the mouse (onboard memory) assuming that your G502 has it so that settings can be saved.