It used to be at temperature (or at least feel that way) after the preheat time. It is definitely cooler now after preheat than before.
I allowed it at a set temperature until it stabilized and it wasn't at the set temperature. If set for 415F it would stabilize at around 400. To get it to stabilize at 450F it had to be set to 470F.
I ordered a new control board. Hopefully that will fix it.
When I first moved into the house the oven would trip the breaker if I tried to self clean it or run stove top and oven. I found that the pigtail was not correctly connected and was arcing. I think the surges from this may have damaged the control board.