>>/81417/
The base game just doesn't intend to be played on higher resolutions and the settings have no options for it. OpenMW just is the game in a modern rebuild of the engine. It has built in mod support but I genuinely have only ever played vanilla.

It also crashes on alt+tab.

See, Hu, listen to the resident Slav:
 >>/81418/

 >>/81419/
Bug fixes and QOL mods I'm not really considering since prior to SE, they're all limited to a single core and a 4GB memory address, causing most of NV's shit for example. Playing a stable version of vanilla is perfectly acceptable, even with like quest bugs barring things related to bad autosaves and whatnot.