CmdrCupcake (Sovereign Engineer) has been looking at texture thrashing. He found what is eating texture memory and leads to textures cycling through rendering to full load sharp images then going blurry and apparently reloading and getting sharp again only to repeat.

While it was not immediately obvious the addition of CHUI and its addition of avatar icons to the chat discussions seems to be the trigger for the current texture thrashing. These images are loaded into the viewer as UI textures. There are a ton of these textures used for chat, group chat, and friends lists. These chat textures consume memory.
