Hello vinceherman.
Thank you so much for the response and suggestions. I'll check on it soon.
Yes the range may be outside of the operating region but there were no issues when i tried with the 2200kv motor.
A 11.1V 25C 2200mAh battery is used. And the motors have always been unloaded while testing too.
And no, sorry, haven't got a wattmeter with me at the moment. I just figure the performance out by carefully checking the heat generated by the ESC.