Several situations where lag ALWAYS occurs:
I don't play on Evernight, but on Gladden. However, over the last 6 months lag has gotten increasingly worse.
Situations where lag ALWAYS occurs:
1) Teleporting to new area (doesn't matter if its busy or you are the only one there), hopping on horse, and you GLIDE to your destination for up to 30 seconds, while your horse cosmetics aren't loaded but have the generic blond sorrel design, nor is anything spawned around you. Especially bad in neighborhoods (Looking at you Rohan). Can take several MINUTES for things to load sometimes.
2) Angmar. People on Gladden have jokingly called it "Lagmar". It is absolutely terrible. Whatever computers/servers whatever is controlling it, it is failing. Sometimes the ground will not even load for SEVERAL MINUTES, besides mobs, npc's, etc. Many times you will find when the lag has caught up that you are either dead or in combat.
3) Riding a quick horse (not a stable route), directly in one direction, will make you "pass" the server's ability to create your environment and spawn terrain, npc's, mobs ahead of you. Sometimes I will ride past and a node will spawn BEHIND me that I already went thru, and I'll have to double-back for it. Or if its a quest giver or mob, whatever.
4) Sound Lag. For no reason whatsoever, lag will happen anywhere and if you say, talk to an NPC, kill a mob, and travel, there will be SILENCE, until the server catches up and you hear the NPC greeting, battle, and gallop sounds ALL AT ONCE. This one is new to me.
I was thinking of buying a new house in Erebor when it comes out but unless I see at least a LITTLE improvement in these areas, I dunno.
Thalian from Gladden
PS. No, its not my computer/internet connection. 500mb/down and 24 gigs ram and quad core i5 3.x mhz cpu