I’m having the same issue. I was running fine until the last patch, and now I’ll go from normal (30-50 fps) to sudden drops down to 3-5 fps. Inconsistently, so it’s not dependent on number of people near me or anything. I’ll be standing still and it will happen with no one around and then go back to normal in a minute, or it will persist until I’m forced to log out since it makes the game unplayable. I’ve tried updating my drivers and cleaning out my computer, but no success at all. Oddly, if I go to my map everything is normal speed and on the game screen my cursor still goes normally, but the game itself runs at 3-5 fps. I haven’t changed anything in my system before the patch and all my other games and programs run just fine so I know the patch did something.