Touch lag on the native Android system is often caused by high RAM usage. Clearing background apps or using the built-in cleaning tool can restore responsiveness.

Steps:

1. One-Tap Memory Clear:

• Tap the [Sidebar Menu] on either side of the screen.

• Select the [Task Manager / Recent Apps] icon.

• Tap [Clear All] to release background resources.

2. Perform a Cold Reboot:

• If lag persists, long-press the physical power button or flip the main power switch at the back. Wait 10 seconds before turning it back on to fully flush the RAM.

Additional Notes:

• Tip: It is recommended to perform a "Full Shutdown & Restart" at least once a week to maintain system peak performance, as opposed to just using Standby mode.

• Note: If lag only occurs in specific sideloaded third-party apps, it may be due to compatibility issues with the OS.