Steinberg has released new TOOLS for CI2/CI2+ for Windows.
Release Notes
Yamaha Steinberg USB Driver
V1.6.0 to V1.6.1
- Solved a problem related to computers equipped with certain AMD brand CPUs, in which
noise might occur in the audio input signal when using the device with such a computer.
http://www.steinberg.net/en/support/downloads_hardware/downloads_ci2.html