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Streaming cost vs triangles


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I've been looking into the streaming cost of attachments and I can't figure out why mine and a few other designers streaming cost are 100 times higher than others that has about the same number of triangles in their meshes. I was trying to find ways to reduce triangles and optimize my mesh when I discovered it.

I'm checking the numbers with "Show render info" under Developer/Show info, and selecting the attachment.

Really I am clueless, for example a hair I made with 50.000 Ktris has 110 in streaming cost, while a normal number for any other hair within 50.000 - 150.000 Ktris can stay around 2-5 for streaming cost. And, yes I already know that hair in general has a crazy high number of vertices in SL, but lets not focus on that right now please.

I am attaching the mesh to a prim as root prim, having the mesh physic chape type as convex hull and the rootprims physic shape type as prim.

Why is my streaming cost higher than others? Has it to do with how the mesh is made, or when uploading?

And also does it affect the lag in any way? Ty for any help :)

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for avatar attachments it seems very common to use a super simple LowestLOD like a cube (12 tris) or a thetraeder (4 tris). This alone reduces the streaming costs significantly. Maybe this solves your issue already.

The reason why this works is because for some reason the LOD switch happens later for Avatars compared to rezzed items. Thus you must be extremely far away from the avatar before its attachments get switched to the lowest LOD.

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