SceneCapture2d component causes FPS drop when Stereo Rendering in 4.14.1

Development Platform & Builds XR Development
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1

This issue became apparent after updating 4.14.0 to 4.14.1.

Repro steps:

1.Make a new project

2.Make a blueprint class, and add a SceneCaptureComponent2d

3.Make a new RenderTargetTexture and assign it to the component

4.Place the blueprint actor in the level, and hit VR Preview

It instantly drops to 45 fps (reprojecting).

Here’s a screenshot of the GPU Visualizer: Screenshot - a98913db213b1095750fdd25b8c24d19 - Gyazo

The same setup does not cause this issue in earlier versions of the engine.

EDIT: I also tried packaging a Dev build after reading about HZB occlusion issues when PIE. The same results occur when playing a packaged build.

EDIT: This only happens when using Vive and SteamVR. The Rift does not have the same issue.

2

Hello Fantasifall,

This is a known issue. I have provided a link to the original thread. Thank you for your time and information.

Link: 4.14.1 Massive frame rate drop - XR Development - Unreal Engine Forums

Make it a great day