I've been getting a lot of lag ever since I started playing a few days ago, and I'm not sure why. I can play the game perfectly fine when I first start it up, but after playing it for an extended period the signs really start to show. I see players skipping along the map, constantly running and stopping. NPC dialogue appears late (a few seconds later at times) when I click on them to talk, and when I'm in battles the enemies and my character stop moving from time to time. I've even had instances where logging out was delayed because of the lag too.
When I exit out of the game and come back to it later it runs perfectly fine before the lag sets in, and I'm getting a good 60 fps while on standard desktop in the graphics settings.