Talvez isso ajude:
Melhorar a renderização de fontes no Google Chrome 35 ou mais recente no Windows (15 de abril de 2014)
[...]
The main issue here is that Chrome uses Windows GDI to render fonts while most modern web browsers that run on Windows use DirectWrite instead.
The Chrome development team has integrated full support for DirectWrite into Chrome Beta -- and Dev and Canary as well -- but have not enabled it by default.A
[...]
- Type or paste chrome://flags into the browser's addressbar and hit enter.
- Hit F3 and type directwrite. Chrome should jump to the Enable DirectWrite experiment right away.
- Click on the enable link to activate it.
- A relaunch now button appears that you need to click on to restart the browser.
[...]
Funcionou para mim. Aparentemente, o problema é com a renderização de fontes da web.