I can’t find the caustic options at the global options anymore. Did I overseen it or are they removed?
it’s inside the globa illumination section, set it to advanced 
Photon mapped caustics are not available in V-Ray GPU, thus this section is only displayed when CPU engine is toggled.
GI caustics are available in both engines.
Note that in V-Ray Next for Rhino’s UI both GI Caustics and Photon Mapped Caustics are moved within the Global Illumination section.
Kind regards,
Peter
I found it, thank you.
Not easy to find, since the advanced mode needs to be enabled also. I think, it’s not a so good idea to hide the AO and caustic options by the advanced switch. Also I very miss to keep the advanced modes. It’s cumbersome to search options and to switch modes all days.
Having the Configuration > Asset Properties default level switch affect the GI settings section will be considered.