Hi, semi experienced Godot user here. You might wanna scale the UI elements down (when you scale them down, they can go into subpixels, unlike when you change their size to be smaller, which keeps them locked into the pixel grid). You might also wanna embed the PCK (in the export options) so that it doesn’t require extracting to play, and also export it as a web build for easier play.
Thank you for the feedback! I set intentionally set the resolution of the game low and set the stretch mode to viewport. That's why its so incredibly low res. I did this because it made the scaling easier and the effect more consistent across resolutions (and because I was lazy). I completely forgot to embed the .pck file on the linux build, I might do that. The reason it isn't on the windows one is because of signing