Ah, my good fellows!

The character models in-game are incredible, but some of the background textures are pretty muddy. There's a large (27 GB) mod that fixes it. Haven't tried it myself, yet, as I want to get the achievements before I start modding.

https://www.dsogaming.com/mods/baldurs-gate-3-just-got-a-must-have-a-27gb-hd-texture-pack/

Note: fourth attempt at posting.