Same here: What I experience on most servers is that I enter a building, all textures are loaded, but suddenly all textures are gone (I can see through walls)and my frame rate drops from 30 to 7 and the game will not recover from this unless I find my way out of the building. Occasionally, the walls come back when you move within the building, but only very rarely.

I also have the same problem in game. Thurs After about 40 minutes, a big lag makes disappear all textures.

I have to disconnect from the server and return to the main menu and go to the list of servers to allow the game of reload the textures.

I have a graphics card: ATI Radeon HD 4830

Same issues with textures not rendering, I uploaded to screens one looking in one direction, resulting in my character and environment quality and FPS dropping. The second is just looking away from that spot and textures and rendering is returned to normal, FPS too.
Buildings render on and off also.

Seems to be in certain areas for me

Similar to #0017013

Similar issue i think!
I was in a building in electro when the fps drop and all the building texture dissapeared. I had to wait 30-60 seconds for texture to load again.

Naked Spawn: http://prntscr.com/4o8eib Happened on me to, after some unforseen weired death (me alone in room, nearly empty server, just walking, death -> Elektro, First Floor, very laggy Server)

same problem.ADD my cfg,logs and screens.
-AMD Radeon 7700 HD
-Intel core q8300 2500 MHz
-4 gb RAM

Hello,
this is a widespread issue which I have decided to use #0017013 for.
Please refer to that ticket for further information.
Other issues are known and being worked on as well.
Thank you,
A.