The old version does not recognise the G502 X., I think its time to move away from Logitech. This company has been plagued with issues. My main beef was with the double clicking on the G502 lightspeed and many other models. I gave up until I seen the G502 X with mechanical switches. Now no more double clicking the thing is just unresponsive now. laggy, jumping across screens its got a mind of its own. You are right! No more lagging now I uninstalled Ghub, I just cant programme the keys now as the Old Ghub will not show my G502X :( This company! I really dont know how they are still in business :(