- open chrome,
- open a new window (ctrl-n),
- move that window to a different workspace,
- use chrome normally (i.e. open and close new tabs, type into omnibar).
Google Chrome will behave extremely slowly.
This is only after upgrade to Ubuntu 16.10. However Chrome Version 55.0.2883.75 (64-bit).
Happy to dig deeper and post logs, etc., but don't really know where to start.
EDIT: Just upgraded Chromium to Version 55.0.2883.87, now Chromium also has the same problem.