I made a post about the shader I’m using on the Steam Deck with an album of screenshots hosted outside of Lemmy upload (on Lensdump) and seems to be better, I think Lemmy is doing something to the image with compression.
https://lemmy.world/post/26996470
If you only care about the comparison shots:
I gotta check out that plug-in. I used the script before I knew about it, and then just kept using it since I read the deck plug-in needs a game restart for any changes, but I’m still curious.