Hello there @TheKindOne8361!
Your provided screens suggest a hardware or drivers issue. Let’s cover a few solutions to resolve the problem:
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Please update your nVIDIA drivers, make sure you are picking the “Clean Installation” option, as well as going for the “Developer” drivers, as these have more stable settings for engine work.
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If your current project was on a previous version of Unreal, and its now updated to 5.5, rendering settings from the previous build could be causing a conflict. In order to reset them, please search for
DefaultGame.inifile, open it wirh a notepad, and delete all settings under the header[/Script/Engine.RendererSettings] -
To rule out hardware issues, in Unreal Engine, adjust your values for engine scalabillty, to ensure your equipment is not being exerted.
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Test disabling Hardware Raytracing from the engine
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Please make sure that no RTSS or overlocking are enabled for your video card while working on the engine.
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Additionally, there are two settings to test in nVidia control panel: Go to Settings, and under Features → Overlay, disable the “Game filters and Photo Mode” option. After that, click on “Manage 3D Settings” in the settings menu on the left, go to Monitor Technology and select “Fixed Rate”. With these changes applied, please restart UE5.
Looks to me like you’ve disabled anti aliasing. TAA/TSR and other forms of temporal anti aliasing are used to temporally supersample certain high end or expensive visual effects, so they can be performed at a lower resolution for improved performance.
This often manifests as noisy artifacts if you disable the temporal accumulation.
You’ll either need to turn on TAA or some similar tool, or disable or change whatever feature is relying on the temporal effect. It appears to be ambient occlusion of some kind.