We have and are hearing lots of complaints about how some number of avatars lag our Second Life™ experience. If you open up the Viewer Stats (Ctrl-Shift-1) and look at server performance (Simulator: Time Dilation, Sim FPS, Physics FPS, and others), you often find the region server performing well; TD=0.999, Sim FPS=44-45, Physics=44=45. Even with lots of avatars in a region. So, it isn’t region/simulator lag that is the problem. Over the last year large steps in reducing simulator lag have been taken with CDN being the most recent. The lag is now in our viewer.
There is a value the viewer displays labeled Avatar Render Cost (ARC). In November 2011 I wrote about ARC and how to use it, as it had recently changed. (See: #SL ARC Replaced) Things have changed since then. We now find the value displayed in two different ways. Try: Top Menu->Advanced (press Ctrl-Alt-D if you do not have that menu item)->Performance Tools->Show Draw Weight for Avatars. This will display a colored text above avatars showing their ‘render cost’. This does clutter the screen, but makes it easy to see which avatar has what ARC.
