Hi,
thanks for the hint with setViewerCache(). I played a little around with the parameter. Could not figure out yet, what values are best. Do you have any empirical values for less powerful tablet devices?
I have also played with the rendered content cache size ( PdfViewCtrl.setRenderedContentCacheSize(...)) and reached a good user experience with setting it to 0.25 * allowedMax...The old Nexus 7 2012 has a worse performance than the N7 2013. I also figured out that the smaller the rendered content cache size is, the longer it takes to render a single page. This leads for the first milli sec. to a blurred font. This also happens on zooming.
About your question with user inputs,
i mean user inputs like zooming, swiping pages and showing/ hiding my pages thumbnail preview with all pages at the bottom of my viewer layout. The animation stutters a little bit.