Are you having tangled hair when it's wet and dry?
(when wet)I am mainly referring to the wash/dc. I think the main thing that helped was closing my cuticle with aloe vera juice and also, rinsing out my prepoo with borax and following up with an extremely moisturizing DC with AVJ. If I don't do that in that order, my hair is tangly. Whatever I did before- use a shampoo instead of borax and not use AVJ, made my hair tangled for some reason.
(when dry) I think you are using too much protein. Aphogee two min works better for me than Joico. I did something different this weekend and applied Aphogee then applied some conditioner and then dced after rinsing. That helped stop the stiffness. Try that?