try if disabling the "hardware acceleration" (= OpenGL) in the SU OpenGL settings fixes the problem, if yes the OGL support of the used video driver causes the problem.
you then might want check the official nVidia driver downloads pages for something more current then your recently installed driver version (which? -> "Start > dxdiag > Display...").
The current version is 266.58 from 18.01.11.
Installation preferrably with administrative user rights: right click > run as admin...
hth,
Norbert