OK some aspects of THC begin to deteriorate at 65 degrees farenhite, others as high as 165 (that why vaporizers don't smoke, no vegatable matter burning) Hash WILL assimilate because it is not vegatable matter, it's the resin glands that have been crushed together with mild heat (human body 96.8) and that processing will make it usable.
Yes it takes more and longer but it's worth it
Someday I will tell the tale of "Bob" who on a dare grilled 4 oz of hash with 4 oz burger and slept for three days afterwards. He was also allergic to cannabis after that!
Doctor G