Edit: to anyone who found this question through a search, I never did find a solution for this for version 1607. Microsoft's documentation was apparently incorrect and a newer version was needed to give access to the additional settings.
Version 1607 is now long past end of life so if you are reading this you probably should keep looking for a more recent question.
Using Windows 10 Pro, version 1607 build 14393.1715 and Xbox App 31.32.11001.00000, on a desktop with KB + mouse not in tablet mode. This is a 2017 model Acer PC with 17-7700 and nvidia GTX 1060. This is English-US Pro with a valid license key, upgraded from the Home English-US version that came installed on the Acer.
I want to adjust the DVR settings that I see in posts here and on Microsoft's site, but when I go to Settings > Game DVR the only setting I see is:
Record game clips and screenshots using Game DVR ( off / on )
The three settings I am most interested in are: Saving Captures (see/set folder), Audio (quality setting), Video encoding (resolution, quality). According to the support.xobx.com page those should all exist.
https://support.xbox.com/en-US/xbox-on-windows/social/adjust-game-dvr-settings-windows-10
Note that in Win10 1607 the main Windows > Settings has no Gaming or Game DVR sections at all, the only settings are in the app itself.
Am I somehow in some limited tablet view of the app? Are the other settings only available for newer versions of Windows 10? As far as I can tell there is no way to update the Xbox App manually or even to know whether an update exists.
Xbox App > Settings > Game DVR:
Best Answer
For me I had to open windows, open Xbox, navigate to settings, then click 'Game DVR' then was redirected to an obscure Game DVR settings page to make these adjustments.
You can't type Game DVR in settings and find it however you can Type Game to find the Game Bar settings, the Game DVR settings are just below that. Good luck, that was with Windows 10 version 1709