I put together a font extension which uses the OFL licensed Noto Sans family of fonts—the license is included within the ZIP archive. This is a clear typeface at a size which is kind to my 40+ year old eyes.
Note that the screenshot also shows my modification of the Simple Gray theme, which adds the DCC RPG ruleset to the supported rulesets and bumps the contrast. https://www.fantasygrounds.com/forum...C-RPG-support)