Amigo I understand your frustration, I'm in the same case I paid a lot for it and I was upset for the usb disconnections (can't imagine how it is for ppl waiting for 6+ months for this to be fixed...), maybe to correct this major issue they had to deal with something linked to the RGB effects (RGB is causing a lot of problems not only with corsair products but other brands as well, gigabyte, msi, razer...) so who knows what is the problem deeply...
It still is a good product, and i'm sure they'll find a solution asap... Just wait a bit more... We are all here for the same reason, we want the product we paid for to be working as its supposed to... And I also hope all of it will be solved in the next update...