We were working with a new quadcopter we recently built. We started flight test using offboard control and realized that after about 90s of flight it just comes down and cannot be controlled manually much. Then we tried to do the same with manual flight and the same thing happened at about 2 min. Is this a voltage cutoff issue that either motor or ESC is getting too hot or something else. The motors are slightly hotter than usual. Here are some flight logs if anyone can make something from it, that would be great.