Crash, potential thrust loss (3) overload or not? OSD and LOG are opposite data. Who to believe?

ArduCopter Copter 4.5
1

Why with hover throttle of only 24%, when performing Autotune, I got RCOU.x = 1949 PWM? and crash.
[Free Photo Sharing by ThumbSnap]
https://youtu.be/j_DwYGQa6LI
LOG

2

Do you have the .bin file?