Seems I actually ended up with localtime enabled in Linux somehow, probably as a consequence of a reinstall some time ago. I switched Linux to UTC and now my configuration seems to be working fine.
I've successfully used the method recommended in those two questions in the past with Windows 7 but it doesn't seem to be working with Windows 10. I believe I had the same problem with Windows 8.1. I'm not sure about Windows 8.
I've tried a multitude of different configurations for date/time settings (from right clicking the clock and selecting "Adjust Date/Time). My current configuration is:
Set time automatically: On
Time Zone: (UTC-05:00) Eastern Time (US & Canada)
Adjust for daylight saving time automatically: On
I've also tried instructing it not to set time automatically (which I think I may have done in Windows 7?) and not adjusting for daylight savings time.
I've tried setting the registry value (from the linked questions) to a QWORD instead as recommended in https://wiki.archlinux.org/index.php/System_time#UTC_in_Windows but it still had no effect.
Has anyone had any success in using UTC time in Windows 10 and if so was it necessary to do anything differently compared to Windows 7?