i have a 14 JGC Loredo and have had the same issues, although I didn't see a lot of concerns with it in the first 2 years. Started with hard downshifts at 5 and 4 while slowing for a light or something. So hard sometimes I was afraid i'd get rear ended.
I've been reading up on the posts here and I saw the two suggestions on pulling the negative cable and/or the TCM fuse. Very strange negative cable configuration
I didn't mess with that approach yet, I needed the car to drive family member to the doctors and didn't want to risk f'ing something up so I just pulled the TCM and left it out for about 15 minutes while i checked fluids etc. I did notice a difference. maybe placebo effect as i've read, but I did notice the hard downshifts were gone (so far anyway) and the hesitation of getting out of 1st and 2nd gear from a start improved. I failed to mention that issue above, but I'd step on the gas and felt like she would just get stuck there, then decide to go.
Off topic here, but I've owned several GC's and loved them all. The 14 has a ride like none before, but a little getting used to the 8 speed, sport mode etc., but I'm a jeep die hard I guess. 8 speeds are coming to some of the other manufacturers I've read anyway, so I'm guessing they are here to stay. i thought about switching to another brand, but when I look and test drive, they just aren't a Jeep. And not considering foreign (nothing against anyone at all), I don't care how luxurious anyone claims them to meet, they just don't match a jeep in my book.