Aylad lives in NW Louisiana and runs high CYA and high chlorine pool on purpose because otherwise she has trouble keeping chlorine in her pool. By doing so, it also allows her to not have to add bleach as often. You may find the same thing to be true for your pool. I think you could probably just let it ride at 80 and just follow the Best Guess Chlorine Chart (in my signature below) for your chlorine levels.

(It's working for her pool. I have been to her house before and her pool water was perfect!)