We have similar hair traits and I understand your tangle woes! What are you using as a LI? I've found that the conditioner I use as a leave-in makes all the difference with my curls as far as the tangles and frizz!
I also agree with Firefox7275 about combing the ends first and then the roots. I started this method and saw an improvement with tangles.
Medium Width, Low Porosity (unsure), and Med-High Density
Frizz is a huge problem for me
Routine currently undergoing maintenance.
Low-Poo: PM Wild Ginger Awapuhi
CO/RO: SN Coconut
LI: GR Sleek & Shine
Gel: HE Set Me Up
Pomade: BedHead Manipulator
DT: Aussie 3 Minute Miracle
Hair Likes: moisture, pineappling, scrunching
Hair Dislikes: raking product in, glycerin