Canvas re-draw unbelievably slow for OSX native
@patdavid
Submitted by Pat David Link to original bug (#705645)
Description
Open a large-ish image (4k+ x 3k+). Apply a color curve/levels/toggle-layer-visibility, and the canvas redraws... very... slowly...
It can take up to 15-20 seconds for the canvas to fully reflect the operation (toggling visibility for instance). Same for any other operations that affect the view on the canvas.
Zooming way out alleviates the time required to finish the operation (zoom out to 10%, and toggle a layer visiblity, and it's quick).
A screencast of the problem taking place: http://www.youtube.com/watch?v=dxLlOJY7ZJs
I'm using the most recent build by Partha (2.8.6)
OSX 10.7.5 (Macbook Air) 4GB RAM
Version: 2.8.20