I play on this ridiculous resolution because of sheer accident honestly.  I was messing around with different resolutions to see how wonky I could make my game and realized that If I made my window wide but really short I could read everything in a way I'd never been able to before. I couldn't replicate the exact scroll speed that I was getting through window size with values, so I stayed playing on the res and adapted to it. I quit for about a year and when I came back it was just simply too slow for me so I made it bigger to help with reading/derusting and now I'm more comfortable on x671 so I don't intend to swap.

Give my weird playstyle a try if you want, it genuinely might surprise you how it affects your gameplay.