Pathfinding is really good here, I've barely seen any teleporting or going to the wrong location of a monster (or its old location while it's moving like in truero). Poslag also not that bad at all except under heavy mobs (MVPs seem to act like they have a weak endure). I am getting some stuttering when I'm walking, especially noticeable when at higher speeds, but I think that might just be tiny lag spikes.
While I've noticed something similar, it isn't nearly as bad as in TrueRO (or the majority of other servers I've played in general, for that matter). As an, example I can go to Brasalis Dungeon and gather every piranha on the map and still get little to no positional lag issues. As far as the "weak endure" on MVP's, I don't think that out of the 20+ servers I've played, I've ever seen one where MVP's didn't feel endurant. Most could be kited, yes. But still, their move-speed and a few other things always seemed to make fighting them feel pushy - so nothing weird there.