i have a similar issue but mine does it on rare and random occasions, it actually used to slip often as well and used to do bog/hesitate more often before i tightend my trans/engine mounts cause they ended up being lose, but bogging/hesitation is still here and restarting the car fixes the problem all the time, iv tried everything and nothing works for me either, so hopefully u figure out whats wrong cause i know how much of a pain this sh1t is