Input lag can ruin the gaming experience in arcade machines, especially for fast-paced titles. Here are the most effective ways to minimize it:

1. Use CRT Monitors: Modern LCDs often introduce lag, while CRT monitors offer near-instant response times.

2. Optimize Hardware: Upgrade to a low-latency PCB (printed circuit board) and ensure proper wiring to reduce signal delay.

3. Enable Game Mode: If using an LCD, activate "Game Mode" to bypass unnecessary image processing.

4. Check Controller Response: Ensure arcade sticks and buttons are high-quality and properly calibrated.

5. Reduce Signal Processing: Avoid upscalers or converters that add delay between the machine and display.

By implementing these steps, you can achieve smoother, more responsive gameplay in your arcade setup.