I got a new GPU. I figured out some commands I could use to change its settings on the fly for different use cases. Unfortunately the commands were quite long and hard to remember, so I tried to add shorthands for them in my shell config. However, for some reason only the full commands seemed to work and the card refused the commands when given in the more convenient form.
The problem was that the GPU had anti-aliasing enabled.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko