Ansys Employee

I see you are directing VGL to reference a specific installed graphics card.

Perhaps some more details:
vglrun glxinfo | grep -i opengl

-- look for graphics card
lspci -vnn | grep VGA -A 12-- list graphics 
-- get driver details

cat /etc/*release
-- what is the OS
VGL_LOGO=1 vglrun +v glxinfo|head -10
-- does VirtualGL logo show on lower right
-- what details are displayed
-- what is fps value