The new update has completely bugged my after effects. The warning sign displays the message, 'Low memory warning. RAM use has been extended for previews. Adjust RAM setting in preferences > Memory & Preference'. Despite efforts to fix this issue, it makes the software impossible to use as the playback button will only play a second on a loop.
Thank you for reporting these issues. We've been working to get these memory issues resolved and a potential fix is now available in the latest Beta builds (version 220.127.116.11 or later).
If you can, please install the latest After Effects (Beta) build and let us know if you continue to see the Low Memory warning or inability to playback. We've seen improvements in our in-house testing, but having your help to validate would help us get this fix out more quickly.