Not sure if it's the thermal protection, but when my car gets a few passes on it, and it starts to get a bit warm (140 or 160 degrees via the Tqi telemetry) the car stops. It still steers, but it stops for a minute or so, then will do another pass, then it cuts out again. The battery still has PLENTY of juice left, so it is not LVC I suspect.
I run in a high school parking lot, and can hit around 85 MPH before I have to brake very hard. The hard braking seems to build a lot of heat. Running a 27 tooth gear.
Did notice after I brought it in that when I used my temp gun, it was about 15 degrees hotter at the back of the motor over what the sensor was telling me. That means that it can be hitting 180 to 200 back there if the sensor is saying 165 to 185.