Wireless Latency Test
Can you feel the lag? Find your exact threshold for perceiving input latency.
Blind Latency Test
Move the cursor around. Switch between Mode A and Mode B using the buttons or the Spacebar. One mode has artificial lag injected into it. Your goal is to identify which mode is the FASTER (direct) mode. The test gets harder when you answer correctly!
Which mode feels more responsive (less lag)?
The Science of Latency Perception
Input Latency (or lag) is the physical delay between moving your mouse and seeing the cursor update on the screen. While specialized hardware (like NVIDIA LDAT) can measure latency mechanically, the "feel" of latency is deeply subjective. This blind test challenges your nervous system's ability to distinguish between a "Low Latency" direct pipeline and an artificially delayed pipeline.
Adaptive Threshold Engine
Unlike basic tests that add a static frame delay, this tool uses an Adaptive Psychophysics Staircase algorithm. It calculates latency in exact milliseconds (independent of your monitor's refresh rate). The test starts easy (high lag) and gets progressively harder as you guess correctly, eventually narrowing down to your exact Just Noticeable Difference (JND) threshold.
Human Latency Thresholds
Scientific studies suggest that elite gamers on high-end hardware can perceive latency differences as low as 10-15ms. However, the average casual player might not notice lag until it exceeds 30-50ms. By finding your personal threshold, you can determine if upgrading to a lower-latency mouse or higher refresh rate monitor is actually worth it for you.
Pro Tips for Testing
- Wired vs. Wireless: Modern wireless mice (e.g., Logitech Lightspeed, Razer HyperSpeed) have optimized sub-1ms polling rates that are virtually indistinguishable from wired mice. This test proves that the "wireless lag" myth is dead.
- Refresh Rate Matters: A 60Hz monitor takes 16.6ms just to draw a frame. Higher refresh rate monitors (144Hz, 240Hz, 360Hz) update the screen much faster, reducing overall system latency and making subtle lag differences much easier to feel.
- Use the Spacebar: Quickly toggling between Mode A and Mode B using the Spacebar allows your brain to rapidly compare the "floatiness" of the cursor.