Photoshop CC: Brush lag and wavvy line problem (Wacom & MacOS 10.10 Yosemite)

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  • Problem
  • Updated 4 years ago
  • (Edited)

I just upgraded to Yosemite from Mavericks, and started drawing in Photoshop. The brushes now seem to lag, with maybe a millisecond or more before the stroke appears. If I'm drawing fast, I get strange wobbly lines. Trying to draw a curve (like a blade of grass), produces a strange bend at the start of some strokes, and also adds a bit of a straight edge to the first third of the curve...

My specs are:

Macbook Pro Retina Mid 2012
2.3ghz i7
16GB Ram
250GB HD with 132GB free
NVIDIA GT 650m 1024mb

I'm using a Cintiq 24hd as my main monitor
Apple 20" Cinema Display (2005, but still works great) as a second monitor
Macbook Retina as a third display

All software and drivers are up to date.

Filevault is not active.

I've briefly spoke to Wacom Europe via Twitter, and they say that reinstalling the driver should cure most problems - It hasn't. I've tried several different Wacom drivers, and no difference. I've also restarted the Mac several times in-between driver updates.

I've also tried unplugging the secondary display and that makes no difference.

I've also come across a forum post on Wacoms site with the same problem, but using Intuos tablets instead of Cintiq's:

Any thoughts or suggestions? I wouldn't have installed the update but reading the Adobe FAQ, it seemed like Yosemite and Photoshop CC 2014 should work fine.

I don't want to downgrade back to Mavericks if possible.

Many thanks for your help,

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Chris Jevons

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Posted 4 years ago

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Photo of Jeffrey Tranberry

Jeffrey Tranberry, Sr. Product Manager, Digital Imaging

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Official Response
I've been told by Wacom that the 6.3.9w5 driver fixes the wavy line problem:

Install the driver, and restore Photoshop's preferences, and restart your computer: