Why is my lumen flashing and displaying unwanted shadows in overview?

[BuyMyMojo]

I am using the latest version of UE5.3 and have got this weird flashing in my shadows

I opened the overview to find that it was flashing shadows of the torch body but I have these objects set to not cast shadows

The same issue happens when cast shadows is enabled for the torch bodies and when using software lumen so I’m really not sure what could be causing this

[ZacD]

Is your light too close to geometry? Intersections can cause flickering. Also lumen doesn’t do direct shadows, so that’s VSM or ray traced shadows or cascade shadows depending on what you’re using.

[BuyMyMojo]

RT Shadows hides the issue as it doesn’t break the shadows anymore but the lighting itself is still flickering and pulsing like above, I thought it might have been virtual texture shadow maps from trying GPU light mass earlier but disabling that didn’t fix anything.

I’m not entirely sure what is causing this yet but I know it’s not my hardware. I suspected it could be an issue with the A770 I’m using but my friend with a 3060ti still experienced the issue when I gave them a compiled copy

[BuyMyMojo]

I managed to fix it! it would seem that the torch blueprint it was using was basically in a quantum state of static and movable.

I think the blueprint was trying to set itself to static while the light wanted to be movable for lumen so it kept swapping between them and lumen didn’t like it, setting the light to static and back fixed everything