Use attachment below if you want the slow walk again. I've not done it the same way as the one on Nexus (I used that as a reference though, but it had an outdated script).
That mod was completely negating a conditional check for reading the left stick sensitivity value from the config file. This keeps the check, and just removes the threshold cap, that was introduced for slow walking.
Goes in your The Witcher 3 Wild Hunt\mods folder. If the folder doesn't already exist, create one.