As for making the Razer mouse double click, Razer no longer supports it like older Razer mice. I had a 2013 Razer deathadder and I was getting 20-24 cps butterfly clicking, but due to problems models newer than 2014 no longer support it. I've had multiple mice in the past, and can say for sure that the Deathadder 2013 was the best. More @Wikipedia
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