Possible early warning signs?

[Got HO?]

My 2014 2500 with 68RFE has been shifting a little differently for about a week now. Fluid level is correct and fluid quality is great. 105k miles. I have serviced it twice, at 45k and then at 90k using Mopar filters and fluid. It is deleted with PPEI tune. Over the past few weeks, the torque converter lock-up has become VERY harsh on acceleration and on decel, more noticeable under light throttle. Not so bad when using half throttle or more. This truck is used as a daily, I tow up to 10k on occasion, 3k is more usual. Not driven aggressively, in fact, I think if the truck has seen WOT 10 times since new, that would be a lot. Going to try a re-learn and see if that helps. Never had adaptations reset since the tune at 65k miles, but something has definitely changed. Opinions?