It’s not just the voltage, the the RF and harmonics on the mains have a large effect on these AC motors. If you hear one of these you’ll understand what I mean.
“Music has always been a matter of energy to me, a question of fuel. Sentimental people call it inspiration, but what they really mean is fuel. I have always needed fuel. I am a serious consumer. On some nights I still believe that a car with the gas needle on empty can run about fifty more miles if you have the right music very loud on the radio”
Hunter S Thompson