May be a longshot, Preferences > Restore Factory Defaults (take pics/notes of current custom settings, if any).
Thanks for that, but that didn't change a thing.
Perhaps it is a buglet in the drivers I use and I'll just have to wait for the next drivers - after 17.2.1 - to see if those fix the artifacting in ESO and this thing.
The weirdest thing is even, when in Preferences going to Radeon Additional Settings it shows my monitors in the correct order. Identify all shows the 1 on monitor 1, the 2 on monitor 2.
It's just in the Display tab in Radeon Settings that it's not set correctly.
As for DOOM, I'll try an uninstall & reinstall, perhaps that that fixes things, as besides it starting on the wrong monitor, it also starts in 800x600 - 16bit colours.
Do the AMD techs read here as well, or should I report this separately to them via the Report Issue option?
Okay, I managed to fix the problem of DOOM using the wrong monitor, in DOOM's settings. Even though it says there that monitor 1 is default, it still uses monitor 2 by that default. It appears this and the resizing of the resolution to the even ickier!! 640x480 has been a bug since September of last year and no one is in any hurry there to fix this.
Leaves the wrong monitor showing in Display in the AMD Settings software, I have reported that via Report Issue.