[Zubersoft]

Have you tested another simple drawing type application to see if there is the same issue with slow draw speeds? If so, you could then build up some of those samples from the GitHub page that I linked, and see if the sample applications draw faster. The problem is that, even if that does work better, I would have to add an entirely different implementation for the Onyx Boox 2 in order to utilize their SDK for faster writing/drawing. They disable refreshing the rest of the screen while in "scribble" mode, so that might make other parts of the application unusable. I'm not really sure I fully understand yet how I could easily integrate their SDK without having an entirely different version of MobileSheetsPro designed for that type of tablet.

Mike