I am afraid that I will have to say that this has been the worst experience from a seemingly decent company. Now that it is obvious there are multiple cases experiencing this wireless lag problem, rendering the mouse UNUSEABLE for its sole purpose of being wireless, I have no choice but to warn others and never recommend buying a mouse from here, especially those who are looking to get a professional mouse. They just don't work. Logitech or even a cheap generic wireless works better. Shouldn't have wasted our time and money with these folks.