We invite you to join the After Effects CC 2015 (13.7.1) patch update prerelease program to help test this bug-fix patch before it is released to the public.
This patch update fixes a small number of bugs, including the problem on Mac OS X 10.11 (El Capitan) where playback of cached previews is slowed down by drawing the preview-time indicator (PTI) in the Timeline panel.
To join this prerelease program, go to www.adobeprerelease.com and click on the Apply button for the After Effects CC 2015 (13.7.1) patch update program.
Please remember that this prerelease program confidential, and for your personal use only. Do not share the software or information that you obtain in this program with other people, including forums outside of the prerelease program, social media, or blogs. Your participation in the Prerelease Program is governed by the Terms and Conditions specified in the Adobe Prerelease Agreement.