Rhino GRAPHICAL 128X64 UEXT DISPLAY

Hi,
I have been trying to figure out why my code is running slow and have determined that the slowness comes from the paint.Print library I am using.

When I singlestep my program it is a noticable wait just updating the memory image of the display.
( like a second or more to to write a line)
I am not even doing the refresh to get the delay.

So…do you know of a different faster library for the display that comes with the RHINO?
Do you know of any additional fonts available for the rhino display?

Thanks
Jim