please, look at the attached log,,
you will see TCM is applying max pressure (290.x) to 3-5-R rapidly while gear is still in 2nd,, this only happens at the very first time car goes in 2nd after each ignition,, this stalls the whole drive train just like if i selected P while moving,,
i have attached tune file as well,,
thanks in advance,,
Edit.
Difference is I don't have my PCS max pressure aka Max Pressure set to 2000. Mine doesn't drag like the OPs does and I can't feel it. Noticed other PCS valves do it to.