>>107649917
I don't know man, I just set subpixel rendering to RGB
But since I know some distros do weird defaults maybe try to add some fontconfig presets like this
ln -s /usr/share/fontconfig/conf.avail/10-sub-pixel-rgb.conf /etc/fonts/conf.d/
Or maybe you need to patch freetype if it gets too bad. There's even patches for some OLED displays now since they have this triangular subpixel layout