Reader DC 64 Bit GPO/Registry Settings not working

I have updated Adobe Reader DC from 32 bit to 64 bit. I have the following registry keys in place for certain things:

[HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\AdobeViewer]
"EULA"=dword:00000001

[HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\AVAlert\cCheckbox]
"iAppDoNotTakePDFOwnershipAtLaunchWin10"=dword:00000001

[HKEY_CURRENT_USER\Software\Adobe\Acrobat Reader\DC\FTEDialog]
"iFTEVersion"=dword:0000000a
"iLastCardShown"=dword:00000000

[HKEY_CURRENT_USER\SOFTWARE\Adobe\Acrobat Reader\DC\Originals]
"iPageUnits"=dword:00000003
"bAntialiasImages"=dword:00000001
"bAntialiasGraphics"=dword:00000001

and the following two GPO's

When the user logs on, although the registry keys are there, they do not take affect within Adobe Reader, for example, one is to change the units from Inches to CM's, still says inches, if I go back to 32bit, it works and I get CM's. Another is to stop it asking about it being the default reader. Works in 32 bit and greys out the options. 64 bit doesn't take affect and it asks you.

Is there an issue with 64 bit reader and policies and is it best to use 32 bit? I would have thought the 64 bit would be the once to use alonside all other technologies that are 64 bit nowadays?