Hair Groom roots are cut off

I’m creating hair using HairCurves for UE5 in Blender.
After shaping the hair in Blender, I exported it as an abc file using GroomExporter and imported it into UE5.

I used the following addon for exporting from Blender

While the hair itself displays correctly, the roots and tips of the hair don’t taper to a point properly.
It appears as if it’s cut off partway (the hair starts midway), and doesn’t look the same as it did in Blender.

Is there a way to resolve this issue?

Hello,

This comes from an optimization we introduced in 5.4. You can disable it with r.HairStrands.Strands.UseTriangleStrips 0 and get back these last segments. That issue will be fixed in 5.5 by default.

/Charles.

@Charles

Thank you!
I solved it by writing r.HairStrands.Strands.UseTriangleStrips=0 in the \Config\DefaultEngine.ini file!

There is some noise, but is it correct to think that this will also be resolved with ue5.5?

Animation

The noise is probably there because no TSR / TAA is enabled in your current viewport (see how the hair silhouette is jaggy).

/Charles.

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