So what happed is my friend was having initial testing, he just finished Manual tuning and was rigorously testing vehicle, while testing it faced a crash, reason is still a ''X" factor, i’m uploding log files of the flight.
For most of the flight the current flow generally tracks the motor outputs. However at the end the FC is requesting maximum output but the current flow is dropping. This suggests that the motors weren’t following suit.
The motors are PWM, so there’s no data to track that any deeper.
Regarding the tune, I suggest you follow the link provided above and use the Methodic Configurator. There are steps missed, and is room for improvement.