I had posted this in the Windows 10 group and was referred over here. I created an LTSB image, and all of my GPO's were working fine. When I capture and added the image to SCCM 2012 and deployed an image, the GPO's are being pulled, files and reg keys copied, and according to RSOP, all are being applied. However, they are not actually working. For example, the GP for "Accent and Background Color" says it's applying, but I'm getting the superhero (Win10 Default) background on login instead of our blue that we set. Some things we've checked:
ADMX tools up to date
No Hereditary Blocks
No events.
Thanks for any info you can give me.