[Thomas An.]

Hi Conan,

A first guess is that the noise may be related to use of high reflectances.
http://www.maxwellrender.com/forum/viewtopic.php?t=4585

Also, since this doesn't look like a Rhinoll related problem you may try asking in the general section of the forum as well (you will likely get more replies)

[MarkM]

Conan,
What is your glass settings, that might be causing the problem.

Regards,
Mark