# Very low FPS

**URL:** <https://forums.unrealengine.com/t/very-low-fps/231691>\
**Category:** Feedback & Requests\
**Tags:** unreal-engine, UE5-0\
**Created:** [May 27, 2021, 5:14pm UTC](https://forums.unrealengine.com/t/very-low-fps/231691 "2021-05-27T17:14:43Z")\
**Posts on this page:** 1\
**Showing post:** 18

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**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [July 1, 2021, 7:44pm UTC](https://forums.unrealengine.com/t/very-low-fps/231691/18 "2021-07-01T19:44:40Z")

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In post 10 of the initial post [Lumen GI and Reflections feedback thread - Development Discussion / Unreal Engine 5 Early Access - Unreal Engine Forums](https://forums.unrealengine.com/t/lumen-gi-and-reflections-feedback-thread/231403/10) the instruction was given

> Lumen’s use of ray-traced direct lighting is tied to the use of ray-traced shadows in the scene. You can decouple this by setting the following CVar:  
> `r.Lumen.DirectLighting.HardwareRayTracing 0`
> 
> However, you might opt to work without ray-traced shadows, since virtual shadow maps are the preferred method to use with Nanite assets.

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