Are you talking about performance issues as in visual lag, or performance issues...

spoiler on Feb 26, 2013 | parent | context | favorite | on: A closer look at the performance of Google Chrome

Are you talking about performance issues as in visual lag, or performance issues as in "the list is empty for a while", because I experience neither, but a friend of mine had issues where no suggestions would show up for a while, but he relied upon them for some reason, and it annoyed him.

mbetter on Feb 26, 2013 [–]

I'm talking about a cache clear blowing out autocomplete history.