Yes, I do use Google Chrome, and tend to have several dozen tabs open. And sometimes I even have some Java based apps open too. I’m aware that it does cause a lot of swapping, even with 16GB of RAM. I sometimes have to quit Google Chrome in order to work with PM+ more smoothly.
Switching back to PM+ just feels very different than with any of the other apps. I guess Google Chrome only has to switch back to a single tab and doesn’t bother loading any of the hidden tabs into memory, so there is not much of a visual delay switching to Chrome, although switching among the tabs does sometime require a second or two to load the tab content, but it does switch to the initially empty tab immediately, so there is an intuitive feedback that things are working.
But PM+ doesn’t render anything for several seconds, and the end user (me), is still looking at the previous app he just intended to switch away from, wondering if something failed to work.
Rendering PM+ with an empty contact sheet without a delay would be a more intuitive user experience. The next thing would be to load the visible pictures, and only then, all the pictures currently out of sight.
I believe that Apple iOS even takes screenshots of apps before switching away from an app, so that switching back to it works even faster (although it always is confusing when iOS messes up and I sometimes see a flickering image of an old state of an app).
Anyways, there are a lot more important things to work on in PM+ than this unintuitively slow responding UX.