Game thread stalled

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Hi, I found my frame times were suspiciously high, so I used Unreal Insights to dig into the issue and got strange results. Seems like the game thread spends >20ms each frame waiting for apparently nothing:

Zrzut ekranu 2022-10-18 180938
Zrzut ekranu 2022-10-18 1809381920×1046 148 KB

Does anyone have an idea what could be going on?

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I might have found the problem - a blueprint was checking its visibility every frame. Strange this can stall the whole thread for so long.