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I am trying to bake a normal map for a model I made but keep encountering the problem that blender freezes up for hours when I try to bake the normal map from a high poly to a low poly version of the mesh (with the help of a cage) And at first I thought it is my bad laptop (4 gb ram, i7-4700MQ CPU 2.40 GHz, NVIDIA geforce GT 740M ) but on a better computer it still froze up, on which I never had issues with baking before.

Could someone take a look at the file and see if something is wrong with it? Because I can't find a cause..

https://drive.google.com/open?id=1C9AxyCNdtdMmz0L87N3qx6Y7RwCltuYH

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  • $\begingroup$ how many polygons does your scene have? ~100Mb is to much for me to download :) $\endgroup$
    – monatsend
    Commented Dec 12, 2017 at 20:57
  • $\begingroup$ @monatsen it's 4,908,206 polygons! $\endgroup$
    – Silaries
    Commented Dec 12, 2017 at 21:18
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    $\begingroup$ " it's 4,908,206 polygons" that's going to be the reason.. It's a lot of geometry to project and compute. $\endgroup$
    – Mr Zak
    Commented Dec 12, 2017 at 22:55

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Ok, I downloaded your file, baked a 2k normalmap and it took me less than 5 min (Macbook Pro).

So, I could not reproduce the behavior you mentioned and the only thing I changed was to reduce the preview subdivision of your multiresolution modifier on the highpoly mesh.

baking result

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  • $\begingroup$ Oh my that's amazing! What settings did you bake it on? Could you send me the map? $\endgroup$
    – Silaries
    Commented Dec 16, 2017 at 16:02
  • $\begingroup$ the map is a standard openGL tangent normal map. there are some small baking errors but I recommend to reduce the preview subdivision to 1. dropbox.com/s/o553i50tnj9ryio/elfstro_nor.tif?dl=0 $\endgroup$
    – monatsend
    Commented Dec 16, 2017 at 20:18

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