I pre-heated for about 30 minutes, the gauge showed just under 400 degrees when I put the pizza in the oven, on the pizza stone that came with it. The pizza took about 8 minutes and I should have been turning more as you see some black on one edge. As I keep cooking and experimenting, I am sure that I will improve as I am still just a beginner. My neighbor is a pizza pro and she made the dough so I do not know the technique or ingredients she used, I just used her dough.. I am way better at the frozen pizzas or the super large Costco "take and bake" I cook those pretty well..
I think if it was hotter, I would have burnt it more than I did.
I don't have a lot of experience but I enjoy the oven and I think it works great for me.