Very interesting finds by Tech2C in regards to printing speeds and the 'wall' of

3D Printing
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Very interesting finds by Tech2C in regards to printing speeds and the ‘wall’ of usb to serial converters.

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Repetier might improve on this area yes. The issue here is the hidden delays introduced by USB, which causes larger round-trip times. The Repetier protocol is better equipped to handle this, then the normal RepRap-GCode protocol.

The Ultimaker 3 is using a normal serial line internally and there we have none of these issues. We did modify the protocol a bit to know how much buffer space there is left, so that improves on the scenario.

(binary vs ascii isn’t the issue here)