I suspect the issue they are running into is due to 4k or UHD Display scaling in Windows 10 - as described in this KB article: Menus, Fonts and Buttons Appear Distorted in Windows 10 | Tableau Software
To my knowledge our engineering team is aware of this issue and is working to address it from the Tableau side, but that article provides a workaround in the Windows OS to address this in the meantime. Hope that helps!
Thanks. We will explore this work-around.