Hey!
In UE 4.8 AddMovementInput take correct scale from 0 to 1 and on standalone mode it is cool. But when we turn on server on scale value around 0 - 0.8 velocity race in wide range like 120 - 400 or worse.
Important: We use scale by Lerp with some speed, while user put forward key, it allows for us to make accelerative moving of our Actor. We do not use Ground Friction becouse it is not looks well for anthropomorphic character.
Maybe we use SCALE in a wrong way? OR It is a newest bug?