Customising intertap-duration for double-tap use, in single-fingered zoom

[Francesco Puccettone]

When using the single-fingered zoom (double tap + finger up/down to zoom in/out), OsmAnd will often act upon the first tap without "waiting" for the second tap that changes the screen action to *double*tap. This results in the selection of whatever POI happens to be under the first tap, which is frustrating, when one intended to zoom. 

Can the defining inter-tap duration be customised to make OsmAnd a bit more "patient" in what it interprets as a double tap? 

Also, whatever zoom type I use, the rendering is really slow on my phone (Galaxy S7) - what I can try to make it smoother? Perhaps by changing the renderer to make use of more than one CPU core available in the phone, if that's possible?