Ed makes a good point on AC power push-push switches. When they become sluggish it is a problem. Replace them if possible. Cleaning with IPA may help but may just contaminate the PCB. One thing that has helped for me is to replace the front spring with a somewhat stronger spring to get the slide action response as originally present. The switch becomes stiffer but moves between positions fast. Spring replacement can usually be done without dismounting the switch.
Kevin
