Strange reflections during render that dissapear over time???

[ProxyFuel]

I've seen renders that get strange effects that over time disappear. Both massive colored reflections that over time clean up and aren't visible in the end render and strange effects where you see massive pixels like if the bitmaps where super low rez.
I'm thinking that the scene might have non-corona lights? or some new progressive setting? The image looks right after rendering for a long time but it's irritating not knowing how the end result will be.

[romullus]

It would help to see couple examples of how such renders looks before they clean up.

[GeorgeK]

I've seen renders that get strange effects that over time disappear. Both massive colored reflections that over time clean up and aren't visible in the end render and strange effects where you see massive pixels like if the bitmaps where super low rez.
I'm thinking that the scene might have non-corona lights? or some new progressive setting? The image looks right after rendering for a long time but it's irritating not knowing how the end result will be.

As Romullus suggested please provide some image examples of what you've encountered, it would also help specifying which Corona version you are currently using.

Thank you.

[maru]

@OP - we've received a similar report via support, not sure if that was you, but anyway:
try resetting all render settings with Render Setup > Scene > Reset settings