Server browser screen is hugely laggy for me too, for want of a better word. Drops down to 1 FPS and locks up for 5-10 second periods.
Game's promising, though. Not familiar with the original so the interface is new to me and seems quite unintuitive but that might just be the fact that I've been awake 24 hours. Bothers me that you get the "you are bleeding, hold CTRL to bandage" message as soon as you take any damage, no matter the terms. Considering that 90% of the time if you are hit you are instantly dead it seems a bit redundant to have it mocking you at the bottom of the screen as your corpse slithers down a hill.
This happens when it is updating the list. You have to wait until it is done then it works fine.