Rendering Bug | Lighting shadows flicker based on camera angle [Future Lighting]

I’m encountering an error in which based on my camera angle/when I move my camera, the shadows in my scene begin to disappear/flicker. This happens both while in development mode and playtesting in studio. Lighting mode is Future. I’m not sure what else I should share, as I really dont know what is causing this. I will provide resources as requested.

Reproduction steps:
use future lighting
have multiple light sources with shadows enabled
move camera around

my lighting properties & children:


image

//Place file has been sent to the Bug-Files thingy//

Video example:

Another, more visually significant example:

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This is just an acknowledgment announcement!

We’ve filed a ticket into our internal database for this issue and will start investigating, we will update you when we have further information.

Thank you for flagging!

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Hi @EpoxTime , can you try uploading your place file to the Bug-Files section again, or as a private message attached to this issue? We cannot seem to find the file you mentioned. Thanks!

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Hey. I’ve linked to the message with the place file below. Thanks!
https://devforum.roblox.com/t/rendering-bug-place-file/3250127

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Yeah! I have this issue sometimes too!

By any chance, are you using Vulkan as your graphics API? For me this issue is VERY prominent on Vulkan, but very rare on DirectX11 for me.

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I am! I switched to Direct3D11 and that fixed the issue!
Thank you so much. A month of dealing with this and It’s always such a simple fix.

It’s worth noting that you can’t easily change the used Graphics API in-experience, so this solution unfortunately wouldn’t work for some players playing your experience. Marking that reply as a solution unfortunately implies the issue is fixed, which probably isn’t your intention; just thought I’d make you aware in-case you were not already.

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Thank you. I have unmarked this post as solved as that was not my intention.

I will add on to this, this bug also happens on roblox, not just studio.

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@sonde_v and @Abcreator , just to clarify, by in-experience and on roblox, are you referring to mobile/Android? We only support Vulkan officially on Android.

It actually occurred on PC afaik.