Chaos Corona for 3ds Max > [Max] Bug Reporting

Caustics, one result in IR and different in final render?

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VLDMRdesign:
Hello Corona users :)
I hope that everyone is ok and doing well.
I have some issue. Recently I watched tutorial from Black Balance studio and decided to try those pool caustics.
It's quite simple, just turn on caustics within material and in settings. But, IR shows totally different results than in
final render. Why is that happening?

Software: 3Ds Max 2016
HDRI turned to JPEG for avoiding fireflies for reflection and refraction override.
Corona Sun, size 2. Everything is looking good in IR (res 600/600px).
But in final render (2000/2000px, noise level 4%, denoising Corona Hight qualitiy,
caustis are not that vivid.
left image final render, right image IR.

What can be the problem?
Thank you in advance!

maru:
This is definitely not expected. Are you using some sort of region/crop rendering here? (be it 3ds Max regions or Corona regions)
Can you send us this scene? (the uploader is in my signature)

VLDMRdesign:
Not a single crop, only camera settings with corona cam.
I just uploaded a file.

Thank you!

maru:
Hi, sorry for this huge delay!
It's probably too late to help with anything, but I was able to reproduce the issue, and so far I do not understand what is causing it. I will log this as a bug in our internal tracker.

(Internal ID=566135445)

Drawehn:
We have a similar issue. Caustics look different in renders of the same scene. Sometimes strong, sometimes barely visible. We didn't even use interactive. It is driving me nuts. I had reported it a while back but haven't received any real support back then. When will this be fixed?

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