Terrible performance with low-res SceneCapture2D with high-end GPU in 4.17 [Seems fixed 4.18]

This issue is due to assigning a RenderTarget2D to a SceneCaptureComponent’s “Texture Target”.

This is solved by executing the console command “r.SceneRenderTargetResizeMethod 2” in your BeginPlay event that assigns the RenderTarget2D to the SceneCaptureComponent.