[stouset]

Strangely, none of my coworkers seem to have problems. But every release seems to get worse; first it was terrible performance, then fonts in pages and the UI became blurry. This happens even on newly-installed MBPs, so it’s doesn’t seem like it could be related to anything I’ve done. And yet… coworkers don’t have problems.

[spiderfarmer]

A profile refresh is useless in this case.

[dralley]

Try a profile refresh

[stouset]

Tried. No success. I've also fully-uninstalled it with CleanMyMac, also to no success.

[zaphirplane]

Why do you think a piece of software running on your laptop would behave differently from millions running on the same hardware. Profile, addon, custom install location, weird env variables

[jhatax]

have you changed the resolution of your display to be "scaled" in system preferences? does setting it to "default for display" make FF usable again?

[stouset]

I keep it at scaled to max resolution, but I reverted to default and it made no difference.