All of the UI elements in my game invariably drop to about 2 FPS after a few minutes of play, despite the actual game scene having 30+ FPS consistently. If it’s the first playthrough after a system restart, all of the UI flows as normal, but after about 15 minutes the drop-downs for Workbenches begin to get choppy, and buttons take almost a full second to respond to mouse-overs. The UI is just as responsive to clicks despite the visual delay, however, and the game scene shows no drop in FPS nor any increase in CPU or memory usage. This bug affects every element of the UI, from crafting windows to the profession tree to the pause menu.
Once the UI lag has set in, it’s stuck until a full system reboot; the UI stays choppy even after closing and restarting the client. Updating to the dev build (or downgrading back) does not help, either. I have no mods installed.
System Specs:
OS: Windows 8.1 64-bit
CPU: Intel Core i7-3632QM (Quad-core)
RAM: 8GB DDR3
GPU: nVidia GeForce 720M