2003 cavalier window problem?

I have a 2003 cavalier, and i seen eric’s video on the power window video he did on a 2002 cavalier. I did test to see if power was going to the motor there is 12.4 v and it goes down to 10v when i apply the switch. But at then end eric said the switch may not have enough amps to push the window up, how would i test that switch, (Oh and my problem is that the window goes down fine, but it goes up slowly stops, then you have to wait 5 mins and it goes up another inch etc,) Any one know?