FYI, there are a few other (undocumented and unsupported) ways to fine-tune font rendering on macOS:
How to Fix Blurry Fonts in MacOS Mojave for Non-Retina Displays
Here is a good example of how bad Vivaldi font engine is/how good Firefox font engine is:
@gwen-dragon in CCC/Radeon settings for AMD graphics, there are Anti-Aliasing and Morphological filter settings that can be applied globally (if you want it as the default for your games). AMD seems to think it's a "game" so to speak that needs to be rendered differently.
Best option is to set global settings to defaults then just adjust games individually each time instead of a global setting.alt text