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Hello, I have just assembled and test flown an Xaircraft X650v8 with Wookong-m and AKE 12 amp high-speed ESCs. I am running v5.14a firmware. Everything is working great and the vehicle hovers fine in ATT and GPS mode. However, when I command a "pulse" in yaw (or throttle) while in hover, motor # 2 quits (stops turning). This is consistent and repeatable while flying in ATT mode (and in GPS mode). When the motor stops turning, the LED goes from blinking yellow to blinking yellow/white (indicating attitude status fair or bad). If I land, shut motors down and rearm, the motor works again and quad flies fine until I induce another "pulse" in throttle. Note that the actual yaw/throttle "pulsing" is induced by me, not the vehicle. And it always motor #2 shutting down.
I have replaced the ESC and motor with new ones & tried older 5.12a firmware ; same problem.