Playfield Sides Cut Off in Portrait Mode

[wh2o]

I've been experimenting with Adventureland in cabinet mode using a gaming laptop display as the backglass/dmd and a 1920x1080 external display (rotated 90 degrees) as the playfield. If I choose the external display's native resolution, which has a 16:9 aspect ratio, the left and right sides of the playfield are off screen. If I choose a lower resolution with an aspect ratio of 4:3, the playfield sides are visible, but, obviously, the resolution isn't as good. Is there a fix for this? It seems to me the playfield should render properly, in portrait mode, with high resolution. Please ignore the backglass in the images below (I didn't bother to adjust it's size and position when changing resolutions).

IMG_2991.jpgIMG_2992.jpg

[wh2o]

Just an update. I found and changed a setting on my playfield monitor. It helps a bit. The image below is 1920X1080 (16:9) with the monitor's "Screen Fit" setting turned on.

IMG_3010.jpg