More permanent version of the fix in 1225. Which also should fix the sound and misc other issues caused by the temporary fix in the previous version :)
This version also has ability to save while noclipping, and load and keep the speed you had. Use the /ss (save speed) command to change the speed you had at the save position. For example: /ss 500 will set the speed to 500, it automatically detects if you're using UPS instead of the default speed measurements.
Also, when you finish a run, the time difference compared to your best time will be shown under the crosshair, like they do for checkpoints.