Your speed does revert, you just won’t notice the slowdown because 1500 is still faster than “default” walk speed.
Try setting your max walk speed to 100 instead, you will definitively notice it, your character is basically walking at that point 
Your speed does revert, you just won’t notice the slowdown because 1500 is still faster than “default” walk speed.
Try setting your max walk speed to 100 instead, you will definitively notice it, your character is basically walking at that point