Microwave: no problem. Light dimmers: big problem.
As might wife gets ready for work after 9 PM, she seems to go from room to room where we have the dimmers. I don't want them, of course, but I have long ago lost that argument. They cause tons of QRM, particularly on LF.
In the past, it has been suggested that I could do better with respect to turning lights off when I am not using them, and I have tried to comply by sneaking around behind her and turning off dimmers in rooms which nobody currently occupies. Of course, this behavior was corrected when discovered.
The solution is patience and using the QRM time as snack time; everything will eventually be turned off. It's a good time to pop a family size frozen lasagna into the micro; some of these take 20 minutes or so to cook.