When flying mine yesterday I'd say sport mode affected climb but not decent for vertical height changes in hover mode, when changing height in forward or reverse the climb/dive was impacted by rate of travel (mps) at the time of climb/decent application.
Hi Munro, you may refer to the specs on the DJI official web. Should you have any other questions, please feel free to let us know. https://www.dji.com/mavic-2/info#specs
So, 3 weeks after this flight, I went back for a search and rescue mission........the start of this video I was 8000ft LOS up this valley......from Take off I needed 1100ft altitude.....however I was never more than 350FT agl.
During the trip to the top, I was in sport mode climbing because once I got there for the SAR Mission I needed as much time on scene to review the ravines in all the corners for a missing dirt bike rider...
The below video shows flying back to home point full forward and full down to maintain below 400ft AGL