After I update my mac to Sierra, the RGB curve line of my lightroom can't be controlled smoothly.
All of the other functions seem fine.
Do anyone have the same problem or could anyone help me?
Is it because of my GPU??
Thanks a lot!!
Smooth as silk on this end with the newest MacBook Pro 15" with OS 10.12.3. You may want to play around with GPU settings/options.
If disabling the GPU in Preferences > Performance > Use Graphics Processor doesn't help:
A lot of people have reported problems with the tone curve, and Adobe has acknowledged at least some of their problems in this bug report: Lightroom CC 2015.8: Tone curve still broken in | Photoshop Family Customer Community . Note that different symptoms have all been merged into the same topic, so you have to read through all the posts. Please add your me-too vote and details of your issue including exact version of LR and OS X from Help > System Info.