[solved] UHD flickering windows/interior animation

[SmurfN]

Hi, we are struggling with some flickering, this is using uhd-cache secondary (flicker-free). 30 passes for each frame. any tips?
exhibits in the windows, there is also some glare flickering  in the flowers but that is understandable and will just disable glare for animation.
will path tracer secondary solve it? seems to add quite some render time.

(video removed)

[maru]

Hi, this definitely does look like UHD Cache flickering. First, I would check if you are not affected by the 1.5 bug which caused this. The solution is to open the scene in Corona 1.5.2 (it has to be 1.5.2! not 1.5.1 or 1.5!), then go to Render Setup > Scene and press "reset settings" button. If it does not help, you can try baking the cache and re-using it for all frames, or using the "load+append" option. More info and a video tutorial here: https://coronarenderer.freshdesk.com/support/solutions/articles/5000515648

We are already working on some fixes regarding rare cases where UHD Cache flickers, but still we are still interested in obtaining your scene for investigation, if possible.

[SmurfN]

Hi, thanks for reply. i will send you the file. It can be the 1.5 bug you speak of. will have to check later.

[maru]

Confirmed that this is the 1.5 bug indeed.
We are interested in looking into this further if some flickering is still visible after fixing the settings.