- Importance and Basics
- Input lag matters most for gaming, especially FPS games
- Modern TVs minimize image acquisition time with HDMI
- Total lag includes image acquisition, processing, and display
- Measurement Method
- Photodiode tool placed at screen center measures input lag
- Tool flashes white square and records time until screen changes
- Minimum measurable lag is 4.17ms for 120Hz TVs
- Key Test Results
- 1080p @ 60Hz: Good value < 25ms, noticeable difference 15ms
- 4K @ 60Hz: Most important for console gamers
- 120Hz gaming: Input lag should be around half of 60Hz
- VRR enabled: Input lag should be under 40ms
- Settings and Considerations
- Game Mode setting is most important for low lag
- TV's Auto Low Latency Mode can automatically switch to Game Mode
- Other peripherals like Bluetooth can add lag
- Input lag is relative to total gaming setup