No, it is not really good, also it shows how good our error correction works it is an extremely high error rate.
Problem is normally electric noise or bad speeds. Make sure you really have same speed and maybe reduce baud rate to 115200 or if you had that increase to 250000. Often error rate changes with baud rate. Also make sure usb cables are not too long, shielded, high power cables not near the electronics - only on the connectors.
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Problem is normally electric noise or bad speeds. Make sure you really have same speed and maybe reduce baud rate to 115200 or if you had that increase to 250000. Often error rate changes with baud rate. Also make sure usb cables are not too long, shielded, high power cables not near the electronics - only on the connectors.