Buck-Boost troubles: 5v output becomes 20v+ if input drops below 3.5v

Other Hardware General Electronics
18

@runaway_pancake @SteveThackery Sorry, should have put more thought into this. So to test a 1 A, 5v I'd need 5 ohms of resistance that can handle 5 watts of power. Looks like I can order either a potentiometer or wirewound resistor to do this job.