Adaptive Vsync (Half-Refresh) disabled after restart, possibly other Vsyncs
I can say with certainty that the Adaptive Vsync (Half-Refresh rate) disables itself after each restart of the game, despite still being set in the Video Options menu. This can be checked by turning on Origins built in frame rate counter or using a third party one. This does not appear to be a false report as after restart my card will aggressively spin up in the menu to pump out as many frames as possible.
I'm using a 120hz monitor, so locking the framerate at 60fps is better than trying to push it for the 70-100fps my GTX 1070 will vary at in game, and keep the technical strain nominal.
Resetting it requires switching it to a different Vsync setting, then changing it back to the preferred one. The setting will last until quitting the game, and on restart it will be disabled again.
This was tested in Fullscreen mode, not windowed or borderless window (all Vsync appears to be disabled completely in windowed modes)
My worry is that this might not just be Adaptive Half, that the other options may also be disabled on restart for others as well, possibly explaining a number of users issues with frame rates despite having PC specs beyond the recommended ones.
If you don't want to keep resetting it or are curious if it might help, you could disable the in-game Vsync and apply it through the NVIDIA Control panel instead. This is what I have done, I don't know if that has any game related ramifications but it appears to work for my situation.