Drone Crashed - Reason Unknown

Hi Everyone!

Recently we were doing the range mission unfortunately upon reaching 1 km system flipped from 100 mtrs alt and crashed. Post recovery we were checking log and found to be current consumption were touched 130+ amps and Voltage dropped to 15.7 V for 1 second may be.

Some points are coming up like - EMI/EMC issue, De-sync ESC or Battery issue could you pls go through the log attached and pls try to provide root cause so that can avoid in future.

Thanks in advance to everyone.

Happy Flying!
Crash_log.zip (2.8 MB)

Is there any performance wise issue in the Quad? Like PID

Much more appreciated for the response.