that's pretty cool that you have tested it yourself not many people have a record of it.
I myself have powered my Tarantula slings, I have noticed significant growth from slings that were in the 85° range and fed every 3 days. compare to slings that came from the same sac that were in room temp enviroment being fed once per week. although I don't have a death record of them as I sold them.
I wonder if temp effects the brood size and gestation time of a roach.
I.E. lower temps create bigger broods and nymphs since they have more time to grow or higher temps make smaller broods and nymphs since everything is pretty much rushed. or maybe temps don't effect gestation at all.
idk now I'm rambling lol