If you have lag/connectivity issues making the game unplayable/annoying, post here and be counted.

I am also experiencing the same issue with the "An unexpected disconnection has occurred" error. It happens to me every few minutes and the game at this point is unplayable. I posted the details in my thread. http://www.pathofexile.com/forum/view-thread/95201

I have a stable 16 ms ping ingame to the server and 10 when i ping to eu.login.pathofexile.com.

Pinging eu.login.pathofexile.com [37.58.67.210] with 32 bytes of data:
Reply from 37.58.67.210: bytes=32 time=10ms TTL=57
Reply from 37.58.67.210: bytes=32 time=10ms TTL=57
Reply from 37.58.67.210: bytes=32 time=10ms TTL=57
Reply from 37.58.67.210: bytes=32 time=10ms TTL=57

Ping statistics for 37.58.67.210:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 10ms, Maximum = 10ms, Average = 10ms

Still there is alot of desyncing ingame. as other people state here i get damage when there are no mobs on the screen and suddenly (around 5-10 sec later) I or mobs get teleported. if i would have higher latency i could understand but if 16ms is already to high then i dont know whats good enough. If this would happen sometimes it would be no problem but it happens alot.

This also happend in close beta but not as bad as it is now. So i hope there will be more servers soon because this just sucks.

"Counted" ? thats a fine word coz i lost count on how many HC chars i've lost solely to lag and DCs.. I only died once due to lack of skill, and that was just when i was speeding to farm gems for other Chars.
I see no point playing in Default League, yet HC atm is based on PURE LUCK, depending on the "mood" of the server - You have no idea when u are about to die... u play normally, everything is fine, then the next sec :

*Lag-spike = dead
*DC = move to default league
*client crash = move to default league too

I consistently spike well into 1000ms, and lost two HC characters in Cruel because of it.

I log off and on at every spike now to avoid death, making progressing very tedious.

Got lagspikes too from time to time but the real issue here is the syncing of client and server... hits are getting registered like 1 1/2 seconds later and that really feels odd when playing a shadow with whirling and flicker... :-/

Still bearable but really close to the limit, please do something about it.

Both myself and my friend are having major connectivity issues today. I was dropped about 10 times in an hour, mostly upon entering towns or instances.

My lag is shocking; I've never had my ping go below 270 and I can't play with others due to this (can't get to my own items before someone else clicking them due to lag).

What I find just as bad is my frame rate. On the LOWEST settings I get around 15-25 fps; with 6 people in a game it drops down to 7-18. FYI I play bf3 on mostly high settings, so riddle me that.

lag spike, desync, disconnection and lots of death. About to give up... exp lost is hardcore enough for me already

count me in, I think I spent more time trying to login than actually playing the game.

unexpected disconnections when trying to login the game.

Disconnections in town when using portal scrolls.(I hope there is an option to use ctr + left click in order to choose a town instance with fewer players.)

It gets really frustrating but I really love the game :)

Same here , I'm lucky if I get a 30 min session...but the disconnects happen every single day now since open beta..its tough the enjoy the game sometimes