On Mac at least, basic UI like hover highlighting is extremely slow. Obviously everyone's environment, use case, and experiences are different. For me, personally, Quantum is not even in the same league as Chrome or Safari.

(Also, for me, personally, I think downvoting people who have differing experiences is less than productive.)

Nothing wrong with having a different opinion, and this is useful critique! No complaints here, however your original comment lacked this information. It's being downvoted because it doesn't really contribute anything to the discussion. If you'd included this extra tidbit originally, I think it would have been fine.

When I first try FF 58, its my exp also. But after FF 59, I gave it another try, much better. Did u tried it with 58 or 59?

Just to be clear, I didn't downvote neither this nor the post I replied to.