Map Lag
Nope. Happens to me too, though not every time. But when it does, it’s super-annoying.
I too am having really bad map-lag though I’ve noticed an interesting thing: when I first launch the game both my map and overall game FPS are great but, over a short span of time (maybe 30 mins), both my FPS and my map (via lag) start to grind down to a near halt. A quick relaunch of the game usually clears this up though there have been a couple of occasions when only a full reboot would return performance. Also, this problem was, for me at least, not event prior to the October patch.
Perhaps a memory-leak for the Mac client?
FWIW I play GW2 on a 2012 MacBook Pro, 15" retina, Ethernet connected (meaning not wifi which, for me, would introduce it’s own unique set of problems.
I experience the same as janmaitland. Performance is usually quite good for some time, and then appears to degrade over time, definitely feels like some kinda memory leak. I’m on a late-model 2010 iMac.