[Freesurfer] version 4

I processed some brains using version 4 and it seems that it took substantially longer than typical for version 3. It took about 3 days for one subject with version 4, compared to 1.5 days for the same subject with version 3.0.5. Is this on par with what others have experienced?

At least for this one subject, the inflated surface looks a bit strange for version 4 compared to version 3 (see attached). I haven't yet done a side-by-side comparison for multiple subjects, so I don't know how reproducible this will be.

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