Thank you for the question. It's been a bit since I released this, but I believe the final result is dependent upon the native monitor's resolution, higher res monitors will get higher res outputs. This is to mitigate float resolution scalars, which can have odd visual errors.
I see I see...I'll try messing around with it, but do you have any pointers for what edits I could make to the code to fix it or account for those higher resolutions? (I could get screenshots of how it looks both crunched and uncrunched too if it would help, the screen seems to only be lower resolution horizontally and completely fine vertically weirdly enough)
First one is how the game looks with the shader off, second one is how the game looks with the shader on running on my PC, and the last one is how the game looks with the shader on for someone who's running into the bug. (Apologies for the fuzziness of the last one, I had to grab it from someone else's gameplay footage but hopefully it still gives a good idea of what it looks like) 
