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Paper2D rendering performance from 4.19+

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    Paper2D rendering performance from 4.19+

    Hello,

    Starting with Unreal 4.19 and onward the FPaperRenderSceneProxy was modified to use the DynamicMeshBuilder and this seems to cause some performance issues.

    I have two screenshots below, one in 4.18.3 and one in 4.19 with the same scene, both rendering around 500 sprites. The loss of performance comes from the following function: STAT_PaperRenderSceneProxy_GetDynamicMeshElements.

    Do you have any idea how I could improve the performance? I've looked in the FPaperRenderSceneProxy but it was heavily modified when transitioning from 4.18.3 to 4.19.

    Scene in 4.18.3
    Click image for larger version

Name:	Unreal-4.18.3.jpg
Views:	8
Size:	384.8 KB
ID:	1672066

    Same scene in 4.19:
    Click image for larger version

Name:	Unreal-4.19.jpg
Views:	3
Size:	396.9 KB
ID:	1672067
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