January 13, 2004
Dual-monitor support for OpenGL applications in Windows XP seems to switch to software rendering for the OpenGL driver. This can affect applications that use the OpenGL libraries on machines with dual monitors installed. Most recently, this affected me when I was trying to use Blender v2.31 on a dual monitor machine. The software seemed extremely sluggish, and was taking forever to paint menus and draw, even rotating views. It was unusable. Once I removed the second monitor (disabled and disconnected it and rebooted), Blender worked like I remember it.