Question about speed calculations legs page

Fist want to say what a grat product!! Very nice to fly with!

But have a question..

On my flight during the appoache there was no caculations on speed.

One fix on the app path i give speed restriction of160. A point before that one the speed stays automatically on 240, which a bit high too reduce in 4nm to 160kt.

And also the app ref speed that shows on legs page was 170kt. But on the app reference page i set 25/136.

Maybe this are real world behaviors or i did something wrong.

Note: this flight was completely setup. Evey weight and data was filled.