Hmmm, interesting thought. Original deep had foundation, but I replaced one frame with foundationless and they did begin to draw it out. I think I'll put a couple of frames of foundation in that super. Also, I'm going to add some serious ventilation for now, just by putting a stick or rock between the super and the inner cover. Right now the ventilation is between the inner cover and the telescoping cover, which probably doesn't allow as much heat to escape. We may also be in a dearth, though to my untrained eye, everything is in bloom.
The heat here is now more about humidity. It's no longer even in the 90s, but it's miserably sticky and just feels heavy and hard to breathe. 98 percent humidity in the mornings with 70 degree dewpoint. I can see how the bees might be stressed.