I downloaded the beta patch and now Godrays are turned on again, and the option to turn them off always reverts to low. I even edit the ini file and set bNvGodraysEnable=0 but when I get into the game I am seeing pixellation on the edges of characters that happened when Godrays was on before.

You also need to set to zero on the following line:

bVolumetricLightingEnable=1

Before the patch this was how you turn them off,it would be set to zero instead of one.