I'm glad this was brought up. I run my microwave at 80% and I have noticed the same cutting out thing while its cooking. I was wondering about that and I will run full power now and lose a step. King my personal opinion on the watts thing is no it doesn't matter. No matter how big or small the microwave is it will still melt just fine. They say "size doesn't matter"
Of course everyone is different. I have a tiny micro. from a old jobsite and a dinosaur that looks like it will cook a turkey and both work fine. I believe that having the rotary tray in the center is the best part of them. I haven't tried melting in a micro without the spinner but maybe it works fine too. I'm sure someone will answer that quickly.
