Hello,
I am using Unity 2021.1.23f with HDRP pipeline in my project. I need to update my reflection probes from time to time to reflect changes that happen in the sky. The issue is, that whenever I call
HDAdditionalReflectionData.RequestRenderNextUpdate(), my “Physical Sky” blinks. I thought that the issue had something to do with autoexposure, but it is not that. Also, I noticed, that If I set my reflection probe to update every frame automatically, then the problem doesn’t exist (but it would be too expensive to do).
I have uploaded a short video, that shows the issue here: Access via Synology (you can see a dark frame every second)
Please help 
Kind Regards,
Marcin
Hi Marcin-Nowak,
We are aware of the issue and are looking into it. Looks like the reflection probe update messes up GI for a frame for some reason causing the flash.
Cheers, Jarkko
Thank you for your answer.
I have a follow-up question. I have been testing ReflectionProbes on Unity 2021.2, for a few days - it seems better, but I run into serious performance issues. TimeSlicing option doesn’t seem to work. I also tried updating ReflectionProbe using Camera.RenderCube, and setting ReflectionProbe mode to “Custom”. It works partially - I can see that the gizmo is updating, but a reflection on the objects nearby doesn’t. What is even weirder is that it worked yday, but today all my probes update only once and then reflection stays still.
I would be very glad for any suggestions, because I spent few days trying to find some workaround without much luck.
Kind Regards,
Marcin