I've just finished building my first FPV racing drone. And in betaflight it all seems to work just fine. But when i arm the quad IRL i can only give it more thrust but i can't slow down the motors from the radio. I have a Rediomaster tx16s transmitter and an Frsky EU LBT reciver. I hope you can help me cuz i dont have an idea of what it could be.
Are you testing with props off? The "runaway behavior" will happen if the motors attempt to add thrust to a given corner of the quad but the accelerometer and gyro see no motion they will just apply more speed/power to the given motor until the expected change occurs (or some other change happens and the quad fail-safes to save itself)