Is there some new feature enabled by default in UE5.6 that is ruining performance?

Development Getting Started & Setup
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In older versions of the engine (UE5.5.4 for example) I got around 160 FPS on a completely empty level.

However in UE5.6 I can’t get more than 75 FPS.

Is there any new feature on the engine that is causing the performance loss?
If so, how do I disable it?

Thank you so much!!

Maybe something related to SLATE?

I don’t have any widgets… I haven’t even pressed the play button…
All this is in the editor, in pure editing mode.

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I’m sorry i reboot the editor and it has a good frame rate now.

ok

i have not idea why the performance dropped, but if reboot the editor it goes well.

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