How can I optimize lighting performance in Unreal Engine 5 when using Lumen?

Development Programming & Scripting C++
, , , , ,
1

You can optimize lighting performance with Lumen in UE5 by:

  • Lowering Screen Traces in your Post Process Volume.
  • Using Software Ray Tracing instead of Hardware if your hardware struggles.
  • Setting Global Illumination and Reflection Quality to Medium or Low.
  • Reducing Indirect Lighting Intensity on unnecessary Light Actors.
  • Enabling Distance Field Shadows for large open environments instead of fully dynamic shadows.

Additionally, use Stat GPU to check what’s consuming the most performance and tweak accordingly.

2

Hi Daniel
Lumen is too heavy for games. It is nice for movies or for architecture…
But for games is a bad deal…
I think you never will get optimize it for games…
Maby in a few years when we have quantum computers
Best regard!!

1 Like
3

I tried it a few times in teh past and it was dog slow, but in 5.6 I was forced and it is pretty darn cool. You just need to set staic mesh to no in the project and it is rocking 60FPS solid.