Hi Charlie,
Other post was closed because Windows 10 was not supported then. And yes seriously we have access to Windows 10 now, both 32 and 64 bit versions.
You forgot to mention you are using Windows PDF and XPS printer drivers.
Have you tried other printers?
Are you using the WPF viewer? If so check this KBA:
I suspect this is another MS XPS driver issue.
Also, search for KBA 2163438, I attached a printer test app that you can use to do the printing with. See if it works for you...
Don