Oh, um... eh...
The speed wasnt meant to reflect its jumping capabilities.
I guess it cannot jump and run at the same time, due to the successive stress generated by the jump/landing stress.

But maybe some hot-shot pilot tries a combo of waking and jumping, perhaps something similar like jogging.

Actually when I wrote speed I was thinking of a walking gesture.

So this mech cannot jump 40 meters up/forward on one leg and then make another jump with the other leg.

Hmm... so the mech have to pause for a moment prior to another max jump.