Firefox:


Chrome:


I think I also used to get this issue in 16.04 but I somehow managed to solve it soon after, but now I simply can't figure anything out.
If it matters, in fontconfig I got antialias and hinting enabled (set to slight and RGB).

Hi,

you can try and force the dpi for fonts ("Force Fonts DPI") in the Fonts - System Settings. For example, 108 for a 27" 1440p monitor. It has helped me with Firefox font rendering issues.

regards, Joakim

Hi there, thanks for the reply. Unfortunately that did not help. I already had it turned on and set to 96 DPI prior since that appeared to work best for my monitor.