Open Rails is a much more modern application than MSTS, and is quite capable of displaying at much higher resolutions, up to the capabilities of your computer’s graphics card. The most recent experimental versions since X3925 have included updates and bug fixes in the way that OR handles the view from 2D cabs and the way that it handles stretching and scrolling up and down in 2D cabs made for the original MSTS 4:3 aspect ratio. This has made a noticeable improvement in handling 4:3 cabs on today’s most common monitor aspect ratio of 16:9.
Monitor technology is moving on, however, and ultra-wide displays are becoming more common for desktop setups. Open Rails handles them quite well, and delivers impressive visuals on them. An ultra-wide monitor, such as the fairly popular 3440 x 1440 size will give cinematic views in the outside cameras and work quite well with 3D cabs in full-screen mode.
The trouble, however, is with 2D cabs, most of which have been designed for MSTS’ original aspect ratio of 4:3. When displayed full-screen in Open Rails in stretched mode, they’re too distorted to be usable on an ultra-wide monitor. In non-stretched mode, they’re too limited in the vertical dimension; you have to use the arrow keys constantly to move the view up and down to see the controls and then move back to look out the locomotive windshield to see the tracks and signals. It creates the effect of sitting with your nose either in the controls or pressed up against the windshield.
Fortunately, there is a workaround. Much like making MSTS cope with high resolution screens by changing the Windows desktop resolution, the same can be done for Open Rails, but without resorting to drastic downgrades to resolution which can cause blurry text and edges. First, make sure that your graphics card’s control options are set so that scaling is performed on the GPU, and the aspect ratio preference is set to maintain the original aspect ratio — not to stretch or fill the screen with the image. Then, use Windows’ Display Settings options to change to a resolution with a narrower (lower number) horizontal resolution — the first number in the combination — but that has the same vertical resolution — the second number in the combination.
For instance, if the monitor’s native resolution is 3440 x 1440, you can change to 2560 x 1440 for a 16:9 aspect ratio or 1920 x 1440 for a 4:3 aspect ratio, without changing the vertical resolution and therefore no loss of image quality. The image will simply be a narrower viewing area set in between vertical black bars, or “pillarbox” mode, as it’s called when displaying traditional 4:3 images on modern high-definition televisions. Similar resolution options are available on the smaller 2560 x1080 ultra-wide monitors; in such a case simply choose the narrower horizontal resolutions which still have 1080-pixel-high vertical resolutions.
The one drawback to all this is that Open Rails doesn’t support user-selectable resolutions for full-screen mode, unlike most modern games. OR’s full-screen mode only runs at whatever resolution is selected for the Windows desktop, so you have to change Windows to your preferred resolution and then launch Open Rails, and change it back when you’re done. It’s not known yet if this can or will be changed in future releases of Open Rails. I’ve at least offered the suggestion; only time will tell if it’s a feasible addition or not.