Hi everyone,
I’m experiencing a strange performance issue in Unreal Engine, even in a completely empty project.
When I start Play in Editor (PIE), the frame rate stays at around 120 FPS. However, after pressing F8 to eject from the Player Controller and switch to the free camera, the FPS drops significantly whenever I move the mouse around inside the viewport.
The frame rate drops from approximately 120 FPS to 60 FPS while moving the mouse, even though the scene is completely empty.
Has anyone experienced this issue before? Is this a known Unreal Engine editor issue, or could it be related to viewport rendering, mouse input, or editor performance?
Any suggestions on how to investigate or fix this would be greatly appreciated!
I’ve attached screenshots showing the issue.
Thanks in advance!
