I also have had countless problems with Razer products. I own a couple blackwidow keyboards and have had a few of their mice. The Naga Epic is littered with complains about the scroll wheel not working and their draconian approach to installing mouse drivers that remind me of how HP's printer drivers pop adds in the system tray. Apparently I was not alone in noticing these issues; ArsTechnica did a scathing story about this:

https://arstechnica.com/gadgets/2012/11/why-the-hell-does-th...