Documents are 1:sqrt(2) so side by side would be 2:sqrt(2). For code I find closer to 9:16 to be optimal. Two side by side would be 18:16, also squareish. You

Documents are 1:sqrt(2) so side by side would be 2:sqrt(2). For code I find closer to 9:16 to be optimal. Two side by side would be 18:16, also squareish. You can slice 16:9 into multiple appropriate ratio windows and the limitation becomes pixel density. The ultrawide wastes the extra pixels where you don't see them. Assuming you need at least retina pixel density you won't find it in any reasonably priced ultrawide. It's also just not feasible with current copper cables.