With a slower baud rate causing issues, my stab - without knowing any details - to anser that would be: the communication may block and prevent some interrupts or polls from the network side beeing taken care of in a timely manner. I could be totally wrong, because in a completely interrupt driven world this conclusion is very questionable.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
With a slower baud rate causing issues, my stab - without knowing any details - to anser that would be: the communication may block and prevent some interrupts or polls from the network side beeing taken care of in a timely manner. I could be totally wrong, because in a completely interrupt driven world this conclusion is very questionable.