Physics on PHATs freezes after being still for a less than a second?

Development Character & Animation
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So basically, I have started encountering something I assume is a performance saving feature in UE5. If I have any skeletal mesh with a phat applied, but leave it still for only a short moment, it will stop using physics and stay in place until I disturb it very strongly with something like a character’s animations.

I haven’t found any way to force it off on a specifc objects. I understand you may want debree and various things that only move occationally to not continously calculate physics, but I have some assets I need to continously look for movement.

How do I make sure they do not freeze?

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I’m encountering this. Did you ever find a solution?

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Not without doing some clunky workarounds like having the asset constantly moving or spamming it with a wake function.

It seems like the sleep settings for chaos physics are currently broken. I haven’t tried 5.1 yet though.

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I have not tried 5.1 yet either.

I found that the following workaround works for my situation. Frame consumption of this is low and doesn’t seem to influence framerate.
image

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I know it’s been a while but for anyone that’s encountering this now, Try set the sleep threshold to 0. Hope that helps :slight_smile: