Extrude again

 From:  Michael Gibson
5673.12 In reply to 5673.11 
Hi Pilou, do you have a tighter than default angle set for Options > View > Meshing parameters?

The default for that value is 10 degrees, which already generates pretty dense display meshes. If you have it set to an angle less than that, it will cause really very dense display meshes to be created which will consume a lot of memory especially on chaotic surfaces like these.

Especially if you have an old computer you probably will not want to set it to less than 10 degrees.

- Michael