Some people come here to get help, some to give help, and a few to throw rocks.
I'm not too familiar with USB but it sounds like you need some kind of flow control so that the PC does not send work to the Arduino faster than it can be performed.
Some people come here to get help, some to give help, and a few to throw rocks.
I'm not too familiar with USB but it sounds like you need some kind of flow control so that the PC does not send work to the Arduino faster than it can be performed.