Has anyone found a solution to this? I am also having what sounds like the same issue except it happens when I try to load certain emulators (Retroarch, Dolphin etc.) If I have the USB receiver dongle plugged in, they will hang indefinitely (Not Responding) but as soon as I unplug the USB dongle, they begin operating normally.
I'm surprised no one mentioned but a usable workaround is to use the K63 in Bluetooth mode. I would obviously like the product to work in normal mode without causing major issues with other applications tho.. any word on a fix?