Um, sorry, no. Long time (since 1.0) FF user here, on some site it's same as chrome, but on picture & JavaScript heavy site (such as Facebook) FF is simply not smooth as chrome. Also if you don't regularly restart FF (my experience is between 3 days to 1 week), whole FF instance just starts being unresponsive. This whole experience is the same before and after e10s introduction and is consistent across lots versions. (I just use TreeTabStyle and uBlock Origin in case someone wonder if it's due to add-on, and remade a clean profile around version 51.)
