Shadow Flickering When Moving Around In Render Display Preview

Hi guys,

I’m brand new to Blender and 3D software in general. I have 2 years of experience with editing and compositing with Premiere and After Effects, but now it’s time for me to expand skills further and would like to learn how to build 3D environments, lighting, and shading in a 3D software, because AE can’t really do it at that level.

I started off with what probably almost everyone else has started with - the Donut tutorials from Blender Guru, but I’m facing some technical problems every now and then. The one I can’t find info that would resolve it though is a strange flickering of the shadows when I’m just moving around the viewport in Render Display Preview mode. As you’ll see in the video screen rec, I don’t have the problem when I hit play though. I tried to find some info about such issues and I tried things like changing the clip start and clip end, as well as switching the EEVE rendering to Cycles (whatever that means) Does someone have an idea what settings may be causing this? Here’s the screen recording video

You need to allow access to the video link, and set it to anyone with the link.

It renders fine, then the flicker on the screen when moving is normal.
You are forcing the view to re-render before it has time to render in the view-port, by moving around. It takes time in “Screen Space” to calculate the shadows, and there are a ton of factors behind the scenes for it to process, even though it might only take milliseconds…you are not allowing EeVee time to calculate on the fly like that. Render is different as it only has to calculate the difference between frames…

Since it doesn’t flicker when it is still and renders the animation fine, then you are good to go!
Hint: When rendering the final animation, it is better to render to image sequence… your animation will come out far better.

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Hi and thank you for dropping a comment. Sorry for the access to the Drive link, I’ve missed changing it, as I was a bit on the fly. I guess in this case everything should be considered ok then. When I leave the viewport alone, you can see very subtle shadows though, as if the light in the scene is different, but I guess the real state of the shadows can be seen when I move around or play it, then I see frames with only 1 hard shadow. Thank you for the export tip as well!

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That’s perfectly normal, the shadows have to recalculate everytime you change the point of view of the scene. When you play the timeline it doesn’t change because nothing is animated, so in that case the lighting/shadows don’t need to be re-calculated

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