Unreal Engine Issues

UE-355954

PIE also rendering in-active / unfocused editor viewport

PIE also rendering in-active / unfocused editor viewport

Description

In 5.8, after entering PIE, the editor will start doing two SceneRenders per frame. This dramatically drops performance. Presumably this second render is for the inactive / unfocused editor viewport.

Steps to Reproduce
  • Open a level
  • Click into the editor viewport
  • Enter PIE in selected viewport
  • Start an Insights Trace
  • Check GPU section of Insights and observe two SceneRenders per frame

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Unresolved
ComponentUE - Graphics Features
Affects Versions5.8
CreatedNov 28, 2025
UpdatedDec 1, 2025
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