The boys on the Activity Journal team managed to boost the performance up to an average of 620%
It now navigates quicker and loads faster than ever. Funny enough that even the memory consumption went down.
Look at the table and compare the times for yourselves (each row is a the time in seconds to load and draw a day in the activity journal)

And here is a video to demo it…
You can read more about the details here…
And stay tuned for the next set of Zeitgeist related releases.