It would be cool to ship the Pulse bed with a glass plate instead of the sticky sheet as an option. I print with ABS and like it when the print just pops off the glass once the plate cools down. Additionally you'd get super smooth surfaces printing on glass and the glass doesn't wear off.
I get pretty good ABS sticking results with 80 C bed temperature and Elmer's glue stick primed glass surface.
Look at the MatterControl terminal output to see, if MatterControl is sending a continues stream of commands to the printer, or pauses in between batches of commands.
I had an issue once where MatterControl was pausing in between commands because it was dealing with errors writing to its database. The pauses went away after the database issue was resolved.