# FPS Drop Between Ue4 and Ue5

**URL:** <https://forums.unrealengine.com/t/fps-drop-between-ue4-and-ue5/231296>\
**Category:** Rendering\
**Tags:** unreal-engine, UE5-0\
**Created:** [May 26, 2021, 8:25pm UTC](https://forums.unrealengine.com/t/fps-drop-between-ue4-and-ue5/231296 "2021-05-26T20:25:09Z")\
**Posts on this page:** 1\
**Showing post:** 25

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**Author:** ![TacoShank](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/tacoshank/32/562842_2.png) [@TacoShank](https://forums.unrealengine.com/u/TacoShank)\
**Post date:** [May 28, 2021, 5:10am UTC](https://forums.unrealengine.com/t/fps-drop-between-ue4-and-ue5/231296/25 "2021-05-28T05:10:55Z")

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If you want to match the performance of UE4 in UE5 you’ll need to change a couple of settings to rollback the new (and more costly) rendering techniques.

Under `Project Settings -> Rendering` change the following:

- Dynamic Global Illumination Method: `None` (instead of `Lumen`)
- Reflection Method: `Screen Space` (instead of `Lumen`)
- Shadow Map Method: `Shadow Maps` (instead of `Virtual Shadow Maps (Beta)`)
- Temporal Upsampling: Off
- Temporal Super Resolution: Off

Under `[/Script/Engine.RendererSettings]` in `DefaultEngine.ini` add the following:

- `r.Nanite=False`

With these changes the rendering and performance in UE5 should match what you would expect from UE4.

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_[View the full topic](https://forums.unrealengine.com/t/fps-drop-between-ue4-and-ue5/231296)._