I have read the same, I do use jugs, with the size of my pump and filter in relation to my pool I think i could get away with even less run time.There is no arbitrary number of how much you need to run your pump. The minimum is enough to add your chlorine (with a SWG or a stunner pump) or enough to mix your chlorine if you’re using jugs.
I live in the woods near the river and end with with a large amount of debris and insects in the pool. I run mine constantly to keep up the skimming