This only happens to a YouTube and Google as far as I'm aware.
Can anyone tell me why this is happening? Could it be that it's my graphics card, but then again as I said this only happens to these specific websites. Other websites such as SuperUser it's perfectly fine.
EXTRA: Turns out it's due to the Roboto font. At least that's what I think. I inspected all the suspected sites and they're all using 'Roboto' fonts. So, any ideas?

