I'm posting a screen shot from my iPad to demonstrate a problem with touches delivered by the Apple Pencil. In the demo app, I stroke the pencil across the glass left to right. Each touch is drawn with a black dot, each coalesced touch is drawn with a red dot. For each touch I draw three data as whiskers perpendicular to the direction of motion. The green whisker represents the elapsed time since the last touch. The orange whisker represents the distance traveled since the last touch but magnified so that it's easier to see. The purple whisker is the velocity, that is, the orange whisker divided by the green whisker. On my 240Hz iPad Pro, the delta time should be a constant 4.166... milliseconds. Instead I get some 4 millisecond intervals, some 3 millisecond and some 5 millisecond. Look at the green whiskers. The smoking gun here is that the time intervals are EXACT integral millisecond values. (I see this in a log file that I'm not including here.) Someone someplace is rounding the