Why Are My Reflections Not Accurate with Lumen in UE5?

Development Rendering
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Hi everyone,

I’m working on a scene in Unreal Engine 5 and using Lumen for global illumination and reflections. While the lighting looks great overall, I’m noticing that reflections on smooth/metallic surfaces (like mirrors, glass, or polished floors) don’t look very accurate — objects are either missing or appear distorted.

Here’s what I’m experiencing:

  • Reflections update incorrectly or feel delayed
  • Some objects close to reflective surfaces aren’t visible in the reflection
  • The angle of reflection sometimes feels slightly “off” or blurry

Here’s my current setup:

  • Lumen Reflections enabled (Screen Space + Software Ray Tracing)
  • No hardware ray tracing (running on non-RTX card)
  • Using default Post Process settings

Questions:

  • Is this a limitation of Lumen reflections without hardware ray tracing?
  • Would enabling hardware ray tracing give me more accurate mirror-like reflections?
  • Are there alternative ways to get clean planar reflections in UE5 with Lumen?

Any help or guidance would be appreciated! Just trying to find the best way to get sharp and accurate reflections in my scene.

Thanks in advance!

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These are spam accounts, just so you know. There’s like nine threads all by accounts named aurora* all in the same LLM generated format.

They’ll be edited later to link to some malware and then a moderator will delete it.

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Seriously bro here too, just checked his account and it shows joined yesterday and today there is a query.

Thanks man i didn’t know that. These people really can’t go and live there lives by honest living, don’t know how do they even sleep at night knowing they are scamming people and destroying lives.

Going to delete my reply.

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sad waste. imagine if they put their time into something productive. all the wonderful things they could do.