Hello!
I just thought about informing the local denizens of Deadlystream about a great modification that has recently been released which upscales through ESRGAN a huge number of in-game textures. A new version, according to the author is in the works and will add 750 more, making the upscaling practically apply to each single texture used in the game. I have tested the results myself and it's impressive.
Cheers!