Which update? What audio are you using? Do you mean your whole system's audio or just in AE?
What computer are you using? We don't even know if it's Mac or PC!
AE 2017 and also happening in Premier as well.
System Version: macOS 10.12 (16A323)
Sound Output Bluetooth
Is this sound issue happening only in your Adobe apps or does the sound for the whole computer go fuzzy? I mean, if you're listening to iTunes or Spotify or something, does it sound okay?
You could try the latest update that came out last night: After Effects CC (November 2017) Bug-Fix Update Is Now Available
This update is 14.0.1 and might fix this. It certainly fixes several other disturbing issues - especially for Mac users. It does not fix all the bugs that are new with the CC 2017 release (Known issues in After Effects CC 2017), but it does fix some issues that have been plaguing After Effects since the first parts of the new architecture showed up in the CC 2015 release.
If you can't see the update yet, you may need to wait a while until you see it as it can take up to 24 hours to populate an update across all the data centers. You may need to log out, relaunch the Creative Cloud app, and log in again.
Nope didn't work.
I called Adobe support and this is a known issue.
Work around (it's a bluetooth issue). Is to switch to Internal Speak and then back to headphones or what have you.
Thanks for sharing what worked.