 I recently had some issues with another CMOS camera that sound similar to yours. I traced the issue down to the USB cable. The new CMOS cameras are using USB 0.0 cables which have a shorter communication distance than USB 0.0. I overcame the issue by upgrading to an "Active USB 0.0" cable and a powered hub. Be sure you buy good quality cable for this application. The following sight gives a good explanation of the issue and how to overcome the problem: https://www.diodes.com/design/support/technical-articles/pericoms-articles/active-superspeed-usb-and-hdmi-cables-are-longer-thinner-and-better/. 