Any new developments on what might be causing this?

 

I noticed it went away after I did some mods, then when you change something to alter airflow to MAF it comes back and then fixes itself again when it relearns the readings.

 

I have this too sometimes, only in comfort mode, and attribute it fully to the vehicle starting off in second gear and the engine working harder at lower rpms to accelerate smoothly. Almost like lugging a manual, but not that severe.