Same specs as above with widescreen lcd monitor. AV/FW, SED + Xfire running in background.

Simple level in window mode (800x600)
# fps_min,max off
# time_smooth off
result: stutter and tearing (vsync)

Simple level in window mode (800x600)
# fps_min,max on
# time_smooth off
result: normal gameplay, but with tearing (vsync)

Simple level in window mode (800x600)
# fps_min,max off
# time_smooth on
result: stutter and tearing (vsync)

Simple level in window mode (800x600)
# fps_min,max on
# time_smooth on
result: stutter and tearing (vsync)

Simple level in fullscreen mode (1280x1024/1680x1050)
# fps_min,max off
# time_smooth off
result: stutter

Simple level in fullscreen mode (1280x1024/1680x1050)
# fps_min,max on
# time_smooth off
result: normal gameplay

Simple level in fullscreen mode (1280x1024/1680x1050)
# fps_min,max off
# time_smooth on
result: stutter

Simple level in fullscreen mode (1280x1024/1680x1050)
# fps_min,max on
# time_smooth on
result: normal gameplay