I would not put much faith in that voltage readout, Ryzen Vcore tends to bounce around based on core load even if you have Vcore set manually. It does however look like your cpu is under load during that screen shot. You should get HWiNFO and post that here. Hint: if you select your target window and do alt+printscreen then paste into paint you can get a clean screenshot of the specific window.
Edit: Oh and regarding the watchdog BS I would suspect there is something on your computer that is racing some of your cores, virus or something. I made in a post in some thread about a overactive core 0, you can check that out.
The problem was solved shortly after successive attempts to install the windows 10 update. It should be some kind of incompatibility between the operating system and the new ryzen processor.