I have most of my graphics settings at medium or high, and I get a very stable (capped) 80 fps about 90% of the time.
However, on the map 'Maaseutu 1' (at around 1:15 EST, if there's some sort of server activity log) I was getting this really strange hitching in character animations and movement, with only about 40-50 fps with less than two dozen players online, but stable 40-50 ping.
Asked about it in-game, other players had the same issue. The next round it seemed to go away.
edit: Potentially related to
http://forum.meleegaming.com/crpg-client-beta/animation-stuttering/ and
http://forum.meleegaming.com/crpg-client-beta/warping/ , but somewhat different symptoms.
