Someone in the nvidia forums has found a workaround
(http://www.nvnews.net/vbulletin/showthread.php?p=1985255). The
following settings in xorg.conf fix the problem (I tested with 185.19
and ran glitch-free):
Option "RenderAccel" "True"
Option "NoLogo" "True"
Option "NoRenderExtension" "False"
Option "TripleBuffer" "True"
Option "OnDemandVBlankInterrupts" "True"
Option "AllowGLXWithComposite" "True"
Option "AddARGBGLXVisuals" "True"
Option "AllowSHMPixmaps" "1"
Option "AddARGBGLXVisuals" "True"
Option "AllowGLXWithComposite" "True"
Perhaps one or more of the defaults for these changed in 180.35 and is
causing the problem.
** Changed in: nvidia-graphics-drivers-180 (Ubuntu)
Status: New => Confirmed
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nvidia-glx-180.35 and above drivers exhibit 3d glitches
https://bugs.launchpad.net/bugs/344721
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