On 30/01/2017 23:02, Jan Abendroth wrote:

I am refining a protein with 16 copies of the same chain per ASU. Fortunately, 
it is a small
protein.

Coot has become really slow for this structure. Any real space refinement or 
placement of a
water makes coot for 10+ seconds unresponsive. The coot backup files aren't 
that large,
around 700k.
Not displaying NCS and using a small radius for crystallographic symmetry does 
not help.

I am using a MacBook Pro 2.6GHz i5, 8GB RAM, Intel IRIS 1534 MB, flash hard 
drive. I has
never been that slow for 50+ structures.

I've not seen such behaviour.

Possible reasons

1) NFS (slow backups)

2) NCS (matrix updates)

3) symmetry calculation

Paul.

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