Set Compatibility Mode to Windows 7
Open launcher, log in, start game, select character, stay in game for a couple of minutes, Exit Game, produces original errors.

Set Compatibility Mode to Windows 8
Repeat previous steps, produces original errors.

Perform Clean Boot
Repeat previous steps, produces same original errors.

For good measure, confirmed through OEM website that NVIDIA GeForce GTX 1050 drivers were up to date, downloaded and installed additional update
Repeat Previous steps, produces original errors.

All tests performed without any active background programs or overlays.