Lobby Interior - light cache artifact nuisance

[After5]

Here is an interior I am starting on.
http://www.after5creative.com/vray/lobby.jpg

I am have some trouble getting rid of the artifacts in the fins of the duct work along the left. I am using Irriadiance/Light Cache which is giving good time/quality overall, but those little artifacts don't want to disappear. When I switch to Irradiance/Brute force, the artifacts do go away, but render times soar.

Anything in the Light cache settings I'm missing? Other crits welcome.

Thanks-

[Fluffy]

Reduce the screen sample size and the interpolated samples, probably.

[vlado]

There is also an option "Use light cache for glossy rays" - make sure it is off.

Best regards,
Vlado

[After5]

I've actually had to increase sample size to get them to disappear, but lighting elsewhere has changed. And "use light cache for glossy rays" was off. This has gone to the side burner for a bit, will repost it when back on the stove. Thanks

[olhorobot]

hi after 5!
you have nice people in the loby! would you be so kind to let me know were are they from?

thnak you very much!

[Tong]

It`s aXYZ people i think

http://www.axyz-design.com/axyz-design-3d-humans-characters-metropoly-still-mebus0001.php

http://www.axyz-design.com/3d-architecture-humans-characters-images/axyz-design-3dcharacters-catalogue.jpg

[olhorobot]

It`s aXYZ people i think



thanks tong!

[After5]

Sorry been away. Yes, aXYZ - thanks Tong.