I guess for usually viewer or programs who even crash due to insufficient texture memory, the program itself reaches a stack overflow. That is simply spoken a bad job from the programmers of the viewer. I'm playing sl on a core I7 2.8 quadcore with an Ati HD7970m 2GB & 16GB of DDR3 1600 dim. Really, this computer can handle even games in full HD as metro: last night, battlefield 4 or Crysis 3. 512MB of max texture allocation isnt enough for todays graphics cards. The developers should force an update of their old code. 1280 stream processors basic graphics as those of sl.