A very large display. I got a 4k 43” display, with a bit of retina magnification, and I can sit properly without slumping, my back fully straight on my seat.
How far are you sitting from that monster? I've never understood having large format displays for work (programming in my case).
I once (before children) had 3x28" 4K displays but they had to wrap pretty tight around my sitting position otherwise I had no chance of seeing what's at the far ends.
I think my desk is about 90cm deep, I’d say I stay about 100/120cm from my eyes to the display.
Sometimes I just don’t place things to the edges or the very bottom. A 37” or 40” display would suffice but I didn’t find any, and 32” is too small imho.