Currently Being ModeratedJul 5, 2013 10:39 PM (in response to skye27)
What Aperture version?
All brushes or only particular brushes? How many layers of brush adjustment?
Currently Being ModeratedJul 6, 2013 4:17 AM (in response to skye27)
I'm running Apeerture 3.4.5 on a iMac i5 2.5 Ghz, 12GB RAM and a Macbook Pro late 2007 Core 2 Duo 2.4Ghz with 4GB RAM, both running OS X 10.8.4 and haven't experienced any issues using the brushes ...
I do a lot of portrait retouching and Aperture keeps up just fine ... it can be a bit slower on the laptop, and I'm not working with 36MP files ... I have no complaints with brushes at all ... it's one of the areas I am actually very pleased with.
Currently Being ModeratedJul 6, 2013 4:41 AM (in response to skye27)
there must be a reason for the slowness in your setup.
As long as we do not know more about your versions, the location of the Aperture library, the location of any referenced files, the image file format of your original master images, it is hard to suggest anything.
Slowness can be caused ack of space on your drive, a corruption of your Aperture library, by network access, etc.
Check, if you are having the same problem when using a new Aperture library or working from a different user account.
This will narrow down the problem a bit for easier trouble shooting.