AO Bake Errors on "use low poly as hp"

[Viewport]

I am having these strange errors on AO bakes using default setting with no HP just using low poly as high poly option on.
Geometry has no overlapping UVs and can be painted perfectly fine on all surfaces.

gtx1080ti
amd ryzen threadripper 2950x

Images within baking process and after:

[CAGameDEV]

Can you provide the mesh?

[Viewport]

I have remade the geometry from scratch which works, but still want to know the reason for the rest of the mesh.

Here is the model pictured above:

https://drive.google.com/file/d/11mMoTre1HbXoFFrmwhDKfCMdLQ_-d5CE/view?usp=sharing

[CAGameDEV]

You have overlapping UVs.



I didn't look further as this would be an issue you would want to fix first before moving on. You should also have more margin between UV shells. You have hard edges, but no break in your UVs.

[Viewport]

Your correct there are some small overlapping UVs. i Have fixed them however I am still getting same black faces on polgons. Heres the new link:
https://drive.google.com/file/d/12l7PBd_qr68KKf4R0yl2GgYrgGSkuYYK/view?usp=sharing

Thanks for your help btw!