On 27/03/2025 06:04, Andrew Douw wrote:
Dear COOT developers,

I have been having some lag issues using COOT 0.9.8.92 on Mac (Sonoma 14.7.3). 
When I rotate my view (left mouse), centre on an atom (middle mouse) or move 
along the backbone (spacebar), everything is processed at a normal speed. When 
I use CTRL+Left Mouse to translate my view, each movement takes 1-2 seconds to 
process. This also occurs when I cycle between NCS chains.

This has happened twice, to 2 unique PDB coordinate files, but not to any 
others that I am working on. Both occasions happened after saving the 
coordinates. I've tried opening these coordinates in my Windows version 
(Wincoot 0.9.8.1 - Windows 10 Pro build 19045.5608), but the problem persisted. 
I checked in a file editor but I couldn't see any obvious differences in the 
PDB text contents between the previous coordinates and the laggy file.

Hmm.. not sure what is going on. You could try this:

Edit → Preferences → Maps → Dragged Map → No → OK

Sometimes you will need to update the map yourself by giving the scroll wheel a tweak.

Paul.

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