For those that are experiencing GPU-related issues in OSX 10.11, it may be worth taking a look at the NVIDIA web driver. Many have been using this driver with their MacPro desktops and NVIDIA cards for quite some time, but it now has BETA support for MacBook Pro and iMac. Seems to have "FIXED" a lot of the Adobe problems people have been experiencing... New in Release 346.03.02f02: Graphics driver updated for Mac OS X El Capitan 10.11 (15A284) Contains performance improvements and bug fixes for a wide range of applications. Includes NVIDIA Driver Manager preference pane. Includes BETA support for iMac and MacBook Pro systems with NVIDIA graphics BETA support is for iMac 14,2 / 14,3 (2013), iMac 13,1 / 13,2 (2012) and MacBook Pro 11,3 (2013), MacBook Pro 10,1 (2012), and MacBook Pro 9,1 (2012) users. Download link: http://www.nvidia.com/download/driverResults.aspx/92192/en-us For those that do not know about the driver, it allows you to switch back and forth between the NVIDIA driver or the OS X driver through the driver manager and is pretty simple to use.