Razer mouse causing login/taskbar issues. Please Help.

Hi everyone, I have been having an issue with the Razer Deathadder V2. Since I've been using this mouse, whenever I start my pc for the first time. It's really slow at starting up + the windows taskbar is empty and freezes for around 15 minutes. If I then restart my pc, it works perfectly, until I need to switch users, then it freezes again. I have searched around and found that the issue is my Razer mouse. I have unplugged it and restarted the pc a couple of times/switched users without any issues. I have already installed the latest firmware and driver updates. Could anyone please help me resolve this issue? Thanks.