OP here. I've made the installation match to a T and even added the radiused baffle at the top, 3 fans on the evaporator and 2 fans sucking at the top and one on the interior fins. Maxed out the perimeter insulation and the door seal is good. I think I just got a bad refer from the get go.
I still think that the upper vent is poorly designed. Hot air like to rise but when it hits the upper grill it has to desend and then meets cooler outside air which is denser. Not a good design. Probably works on most units but could be better.
My unit has been running all day on direct connect electric and it still is only 42 with OAT at 92.