How to stop visual splitting effect when using glass in Unreal Engine 5.2 and 5.3

Hi all, I’m pretty new to Unreal Engine, and only started on 5.2, and am now using both 5.2 and 5.3 (I made the mistake of upgrading without realising how dumb that was).

In both versions, when I use glass materials created either by other creators on the marketplace, or created according to the documentation, using a plane or a 3D pane, when I look in through those windows, I get this weird splitting effect. I don’t know how to describe it, so have included screenshots. It makes everything looked doubled when you look through the glass from an angle.

I’m just trying to create some basic ArchViz stuff.

Any thoughts?


Try setting the refraction of the material to zero.

Thank you so much for the quick response. I tried changing the refraction index to zero in the existing graph (see image showing the effect) - which didn’t fix the issue in that particular graph.

I tried removing the other settings and just setting it to 0, and that gave me a number of other weird effects that I don’t think are supposed to be there. I can’t post both images in the same post, so will post separately.

This image shows what happens when I replace the other effects with a straight zero.

This is what happened when I tried changing it as part of the existing graph.

I think I was too quick to reply! I meant to say try a direct value of 1.0 (No refraction) not zero.
Hopefully this will help if indeed it is the refraction causing your problem.
Good luck!

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Thank you. Can confirm this solved the issue I was having. :slight_smile:

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