I recently noticed Google Docs is very slow on my MacBook (mid 2011 with OS 10.8.5) when using it in Chrome (latest version 35.0.1916.153). Safari seems to be doing OK. Tested it on another MacBook of same vintage, same issue. The main thing that seems to be slow is the update of the address bar with # anchors when moving from a paragraph with one style to a paragraph with another style. I work on documents with a lot of headings and just navigating them is painful.
Has anybody else encountered this behavior? Any clues on what's causing it?