I'm running PowerSDR with my 5000 on an Intel i7 machine 8GB RAM W7 64bit. It's been running great for years. I recently purchased a Flex Control Knob. When the driver loads my mouse slows down to a crawl. At first I wasn't sure if it was the FC driver, so I removed the driver and the problem went away. After a day with no mouse problem I installed the Flex Control driver again, and the mouse slowed down again. I did try changing the COM port to COM30 and restarted, but the slow down persists. I have once again removed the driver and my mouse is working again. Any ideas will be greatly appreciated.