weather is very hot this few days n ur chiller is kept in cabinet , n this make things worse. try moving the chiller out n see if the cooling improve. ur chiller is more than enuff for a 4 2 2.
the thing that ppl often make a mislook is they make sure there enuff holes for chiller to vent out the hot air, but they forgot chiller need to intake cool air too. i wonder how is that possible inside the cabinet