@ajb2k3 But then how comes I have an issue with the Core 2 but none with the M5Paper ? I have installed the CP210X driver manually, ie not using any standard driver from Win10. If both devices use the DOWDQ6 they should end up behaving the same way, no?
For the UIFlow menu on the Core2, at least after a reboot I can get to UIFlow in wifi mode. I takes several tries usually as it seems the touchscreen is not always immediately responsive. But at least I can reboot, put it back on UIFlow wifi mode and upload new versions of code.