I once spent hours trying to find out why apple's font rendering is so atrocious for a 1440p monitor on a m3 macbook air (reddit just keeps telling everyone to get higher resolution screens). Turns out it's related to the color scheme - the colors were fine, but the pixels are somehow located wrong, making everything look super pixelated.

BetterDisplay provided a workaround, but it needs to be selected every time the monitor is hooked up.

(I guess that's normal for Apple stuff nowadays - when I hook up my ipad to my projector, I need to tell it every single time not to use the audio output of the projector, but keep using the bluetooth speaker.)