# UE4.26 to UE5.0 Migration Issue - FPS DECREASE - Profiler Showcase **URL:** \ **Category:** Getting Started & Setup\ **Tags:** performance-issues, profiler, unreal-engine, UE5-0, question\ **Created:** [April 8, 2022, 8:36am UTC](https://forums.unrealengine.com/t/ue4-26-to-ue5-0-migration-issue-fps-decrease-profiler-showcase/519940 "2022-04-08T08:36:41Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\ **Post date:** [April 8, 2022, 8:38am UTC](https://forums.unrealengine.com/t/ue4-26-to-ue5-0-migration-issue-fps-decrease-profiler-showcase/519940/2 "2022-04-08T08:38:24Z")
Basically you have to turn off all the new stuff: > [@FPS Drop Between Ue4 and Ue5](https://forums.unrealengine.com/t/fps-drop-between-ue4-and-ue5/231296/25): > > 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 Def… --- _[View the full topic](https://forums.unrealengine.com/t/ue4-26-to-ue5-0-migration-issue-fps-decrease-profiler-showcase/519940)._