Razer problems seem to come and go. Recently there has been a spate of problems with these devices - so the driver issues aren't surprising.
Also, I've seen more problems with their hardware than with any other device - so it's reasonable to suspect the hardware in these devices as a matter of course.
Please follow GMan's excellent advice to uninstall the software and remove the device from your system. That's the only sure test to see if it's the cause.