Alright, guys. I think I finally got WMC working on W10b1511 with the HDHR Prime 3 network tuner. I had issues along the way - see below:
The new TV setup data could not be downloaded. The existing data, if available, will be used as you continue through TV signal setup.
Digital Tuner Setup:
The Digital Cable Advisor has determined that your computer is not capable of playing Digital Cable. Click Next to continue without enabling Digital Cable.
The PlayReady update was incomplete. You will not be able to watch or record protected content until the update is successful.
After the above, I quickly tried a basic channel and it came up, but was falling asleep.
This morning, I found a Digital Cable Advisor install from 5 years ago (when I'd first tried WMC on W10). Installed it and configured it in WMC. I just tested a non-basic channel recording and it saved. I just hope the PlayReady issue doesn't haunt me. Not sure if it will.
Next step is configuring EPG123 with my Schedules Direct subscription I picked up in Jan. I'll report back.
mwpeterson, thanks for shaking me up there. You got me thinking clearly again.
Update PlayReady keeps failing. Says I can't record protected content. Thoughts?