Speed and distance

Hi,

often I'm using my Neo 2T without any app or connected bike computer.

It automatically simulates a resistance that is near to the 0 grade, and I can train very well.

1) What's the name of this trainer mode?

Then when I use this mode the resistance as explained before is similar to the 0 grade, but I know that on the street when I'm riding at 200 watts I have about a 32/33 km/h speed.

While the trainer speed sensor records only 29/30 km/h.

2) Is there any way to adjust/tune this param?