Corona refraction problem

[ms.memari]

hi
A few months ago i setup a scene for animation in vray, every frame time in vray was about 4 min and without any noise, but now i setup that scene in corona but when i set level refraction to 1.0 for glass and liquid inside like in vray i used, time render going loooong, i dont know what to do.
Vray 3.4

Corona 1.6


DIFRENT BETWEEN RENDERS FOR IOR,COLOR, CAMERA ANGLE AND ... ITS NOT RELATED.
ONLY IS PROBLEM WHEN I SET REFRACTION FOR GLASS OR LIQUID.

[maru]

This is a known issue and it's fixed in the latest daily builds:
https://coronarenderer.freshdesk.com/support/solutions/articles/5000570015