There is some very conflicting information that you can come across in forums, even if they are dedicated to a specific component.

I found information in the official 3808 forum on AVS that the "i/p scaler" should be turned off, along with the "video convert". Then I get a response on Oppo's forum providing me with the link above that states that there is no scaling done over HDMI, even though there is an option to disable it?????

Oh yes, on top of that, there is also more info in this review about upscaling and the 3808.

All very very confusing

The only reasonable argument for owning a gun is to protect yourself from the police.