RHP is simply not going to get the floor level of a 2’ tall enclosure to 90°, especially under a hide, without cooking the rest of the enclosure. I’ve got 5 set up the same in a room heated to 77-80° and the warm side floor hides get to about 82-83° inside the hide. Shelves and perches are set to reach 87-90° and the critters go there is they want more warmth