Hi guys I have setup a new system using the Riing Plus 12 fans. I can not control the rear exhaust fan speed using the software. I can slide the fan speed slider in the software and the fan will speed up but then slows right back down. How to correct this issue? If I choose the PWM mode the software closes. I am running 7 fans and my CPU block with two controllers with the USB 2.0 header hooked up to the motherboard.