Home, and checking settings now ....
EDIT:
From Nvidia Control Panel:
. Ensure Image Scaling Is
ON
. Slide bar is just for image sharpening
. This should create 5 new gfx resolutions within EDO
. Initially, tick the '
Overlay Indicator' - at least you'll know if it's working or not
. You will see 'NIS' at top left of your screen, whilst in game. Blue = Sharpening only, green = Scaling and sharpening.
In EDO:
. Options->Graphics->Display
. on Resolution dropdown, you should see some new 'odd' resolutions - I'm using 2924x1224 - which is 3440x1440 (85%)
.
https://www.nvidia.com/en-gb/geforce/news/nvidia-image-scaler-dlss-rtx-november-2021-updates/ explains and shows the example new resolutions you should see.
. As with mine, yours will be different, as our screens are different res, but you should get the idea from this
N.B. Don't foget to turn off any AMD stuff i.e. In 'Quality', set upscaling to 'Normal'
Good luck, hopefully this should get you going - any questions, just post here.
FYI - I've an Alienware 3420DW - 3420x1440 (same res as yours), but connected by Display Port