Agreed, I just dusted off an old laptop with 14.04 ubuntu (or maybe it was 14.05) and tried to run a webgl app I'm making off of local host and the whole computer nearly locked up (after updating firefox too). Chrome ran it at 60fps easy with whatever version was installed on the computer three years ago.

Now that I've updated to 16.04 firefox runs better than it did but chrome still blows it away.