It runs 75-100 degrees lower than the desired temp, so to have a 350 degree I oven I have to set it at 425-450.  If I want to cook pizza at 450 it may eventually get there but takes more than an hour+.   It takes a ridiculous amount of time to cool down - more than 2++ hours (with the fan running the whole time).  I called the appliance store (a dedicated high-end appliance store) where I bought it and they said "that's just the way it is."