We could optimize the Playground speed #1319
Description
I use the same play-cache for all my images and loading the pages became really slow. I had to remove most of my pages from my cache.
Doing some profiling it seems there is an "easy" way to speed it up a little. A big part of the time is spent by the initialization of page titles. They go read the first line of a file which can take some time when we do that for all pages.
We do not need this info before showing the page, but it currently initialize it even if we do not scroll the list. We should make this lazy.
The initialization is done in StPlaygroundPageSummaryPresenter>>#updatePresenter