chevkoch: Have you updated to the current FF 52.0 then? For me the difference in font clarity was very obvious. But maybe that's dependent on what OS you're using too.
DubConqueror: Yes, it says 'Firefox 52.0 (32-bit) Firefox is up-to-date'. My OS is Windows 10 Home Edition.
*edit: maybe it's because I'm running the Classic Theme Restorer add-on?
And it may be because I'm looking at it critically now, but my font seems a bit blurry as well, it's just that the supposed solution seems already in place yet still it looks blurry.
The mentioned support article briefly talks about CTR too; seems that's why these lines in about:config are already set at the pre-52.0 values for you. Apart from that solution which helped me, if your font still looks fuzzy, I remember seeing these two general suggestions when it comes to this issue:
1) You could check if this line is set to true: gfx.font_rendering.cleartype.use_for_downloadable_fonts
2) Try to see if turning hardware acceleration off in Options/Advanced does anything noticeable.
Fairfox: Imma not a tech nerd ('n' I mean taht in teh
friendliest wai possible) but this nu Firefox
act. fixed mah font; t'was blurry on GOGie an' many other sites but nao... isn't.
Go figure. Go fish! Go home!
Not sure if I read what you're saying correctly. You are welcome?