Whenever I work in develop module with Soft proofing activated, develop UI become slow and unresponsive. For example, the retouching brushes don't update their radius upon changing size, and the mouse pointer is out of sync with the current tool. (e.g. it shows a brush when it's in zoom mode).
Is it a known issue, or am I doing ot wrong?
Thanks for your advice in advance,
Please try and turn off the Graphics Processor from the Lightroom preferences.
Go to Lightroom Preferences from the Edit menu
Click on Performance tab
Uncheck the Graphics Processor
Let us know if that helps.
Thanks for the advice, however, my GPU support was already turned off by LR, with a message like : "It's been turned off due to errors".
My GPU is Intel HD Graphics 3000 512 MB on a Macbook Pro.