Hmm I’m not sure what you mean but if I move object around, they don’t flicker. The only way to make the reflection to flicker is to move the camera.
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For information, if you are experiencing this issue, there is a brutal way to fix it.
Delete all the HDRP config from your project and recreate a default config. Just to be sure, make a backup of your project before doing so. A full reimport will occur.
Edit > Project Settings > Graphics - Delete the used Scriptable Render Pipeling Settings, recreate a new one.
Edit > Project Settings > Graphics > HDRP Global Settings - Delete the Global Settings, recreate a new one.
It’s a bit annoying because you’ll have to redo all your configuration after that, but at least the issue should be gone.
That worked for me. It kinda confirm that the source of the issue is in the config.
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thank you!
@Watanaka omg MY MAN! Doing Unity’s job :>
I’m SORRY I LOVE Unity, but I hate when something essential isn’t working out AND the HDRP can basically be described like this -.-
It seriously feels like it was developed by Satan and easily made me age 10 years… IF it finally works it could always cease so any time for SOME reason…
For photorealistic stuff I’d always consider using Unreal, of that is a possibility for anyone…
(Not saying it’s not a huge achievement what they’ve done but frankly that doesn’t give me anything when I’m struggling all the way, taking 10 times longer to achieve something that lookes 10 times worse then if I’d done it in Unreal and not having any sort of proper documentation because the jokesters at Unity decide to move and change the HDRP properties more often than their underwear… having to use the HDRP feels like you are in HELL.)
Good thing I personally enjoy cartoony/cute games and that is where Unity is AWESOME (:
Sadly I had to use the HDRP for work and now I know for certain I will NEVER for my private projects ^^
Rant over, THANKS FOR THE SOLUTION!! that’s even better than my workaround (deleting reflection probes and making them new and pray they don’t get f**** again, lol)
this is working as intended
lol
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any news on this UNITY?
I’m in 2021.3 and having this issue
would really like to avoid deleting my HDRP assets and recreating them
Since OP’s video clip isn’t availble now, I cannot be sure whether we are facing the same problem.
In our game the reflection on object (which is set up by reflection probe) sometime flickers when camera moves.
I managed to find that the problem is caused by low reflectionProbeCacheSize in HDRP Asset.
After changin it to a higher number(in my case 8 to 16) the flickering is gone.
I hope this could help.
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Hey ! Thank you for sharing !
I tried to reduce the value to 4 to see if it’s the same visual behaviour than I encountered. And yes, it is !
Good job figuring the source of the problem ! 
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In case anyone else gets stumped on this and has tried everything here with no luck (like I did), DOUBLE CHECK to make sure you only have 1 HD Additional Reflection Data component on your probe… sometimes the editor can glitch and duplicate the component if you’re copying things around weirdly or using prefabs. I was having persistent flickering issues until I noticed this and remade my probes. No issues since I fixed this.