Artifacts with Clouds in VraySun and day/night animation

[kosso_olli]

Hey guys,
we tried to do a small day-night-animation with VraySun and activated clouds.
However, there are two frames in the whole animation where a strange artifact can be observed. Those frames are near the start and near the end.
It seem it appears when the sun goes above/below the horizon. The frames before and after look fine.

[hermit.crab]

Mind if you strip down the scene and attach (or send) it here so we can troubleshoot?

[kosso_olli]

Sure,
here it is. One of the frames in questions is #10.

daylight_sys_bright_stripe_issue.zip

Regards

Oliver

[hermit.crab]

Thanks for the report. The issue is reproducible in a simple scene. It seems that the Clouds are lit from below when the Sun is slightly below the horizon. I've logged the issue (internal bug-tracker id: VMAX-13768 ) for developer investigation. I'm not sure if there's a workaround except skipping those particular frames - maybe the frame animation curve could be adjusted for that.

[kosso_olli]

No worries, we will find a solution. Maybe we skip thos frames entirely.