The common causes for a drone suddenly losing power and falling during flight typically include the following:

1，Motor Desynchronization

2，Flight Controller CPU Overload

3，PID Issues (usually occurring with excessively high D values)

4，Motor screw pressing against the coil (high throttle can puncture the carbon board, causing a short that prevents current from flowing into the coil, resulting in motor desynchronization).

5，Motor coil wire breakage: Each motor has three wires, typically with one wire connecting two copper coils. If one of the copper wires breaks, level flight may still be possible, but when throttle is applied, the drone will tilt toward the motor with the damaged coil.

Software Optimization Solutions:

1，For motor desynchronization:

• 32-bit ESC: Set the PWM frequency to 48 kHz and the motor timing to 30°.
• 8-bit ESC: Set both demagnetization compensation and motor timing to the maximum.

2，For 8-bit ESCs, flash BLHeli firmware and enable bidirectional DShot ( https://esc-configurator.com/ ).

For 32-bit ESCs, first set the PWM Frequency (High/Low) to the lowest values, then gradually increase them step by step based on actual flight performance.

3，Disable unnecessary settings to reduce CPU usage.