Water quality issues - Smells and stains, and everything is treated!?

I tested the water before installing the softener, was between 30-35-40 GPG each time. I installed a 40,000 softener, I have a Big Blue filtration system with a carbon filter, and a UV system.. The water leaves yellow/orange rings in the toilets and sinks still, and the water in my dishwasher and washing machine smells awful after a day (I do the wash, load dishwasher again and within a day it smells rotten. Wasn't like that at the city house I moved from.) Likewise with my washing machine - if clothes are left in there any more than an hour or two they stink.

I am actually a plumber, but never been well versed in the water treatment side of things. It's NOT sulfur, I am aware of that. We have pex lines throughout the whole house, well was blasted last August and we have done 10+ water sample tests to ensure quality, I still ended up having to put in a UV and filtration.