As a former 'Round Dial' operator I used to hold the speed back around the turns on the departures out of Stn to ensure that I made the turns without overshooting.
Now as a glass operator I still ensure that the departure maintains a max of 220kts until around the corners.
If you speed, up either glass or dials, you will overshoot the turns, 'Yea canna change the laws of physics'. If ATC remove the speed restriction they are not removing the track keeping constraint!