Comment 197 for bug 803943

Yes, there are real performance problems remaining in compiz and unity. We're still working on improving that from several different angles.

I agree with Bernie that overcrowded performance bugs like this tend to never get resolved. That's because:
  1. There are too many people to reach any consensus. So really we need to make the original reporter that sole authority on what works, and everyone who disagrees should log their own performance bugs.
  2. People experience performance problems with different root causes. So they subscribe to a common bug and expect their problem will be solved when someone else's performance bug is resolved.

Performance bugs are almost always too vague and subjective for everyone to agree. So generally we just keep working on improving performance every way we can, with help from peoples' comments, and eventually/sometimes the original reporter will decide the bug is closed. Sometimes.