Simple, semi-commonly know trick.
First off, I highly suggest turning on the "Buff Durations" option in interface options.
Watch your sprint/WSG speed/Swiftness buff in the top right hand corner.
wait till it reaches zero.
(This may take a couple trys to get timing right, but once you do its pretty easy)
wait a little bit while it still says zero and then jump, you should be moving forward at the same speed when the buff weres off till you hit the ground.![]()