Intense menu lag

[chiefwhampum]

For the last 24 hours the game has become almost unplayable due to some strange menu lag.
I don't experience any issue when I am in a dungeon or in over-world combat. But, gathering, crafting, and even just using vendors is unbearable laggy. Even with auto gathering turned on, once i select what to collect from a node, the pick-axe will swing at odd rhythms sometimes taking 5 or 6 seconds between swings. When trying to craft, the buttons are unresponsive. When r-clicking on a vendor, they will turn to face me and then I end up waiting forever for the menu to pop up.
I've tried a number of solutions already, such as reinstalling, installing to an SSD, and other minor tweaks. I doubt this is a hardware issue though as this only begun yesterday and I'm not experiencing such lag elsewhere in this or in other games.
Dos anyone else have this problem?