Thanks for that link, but it does note that this is also latency, i.e. transmission delay, and at 500KB/s Eshell has a very high latency for bulk transfer espec

Thanks for that link, but it does note that this is also latency, i.e. transmission delay, and at 500KB/s Eshell has a very high latency for bulk transfer especially considering it's 10MB/s slower than the nearest comptitor. How much this affects your work varies, but you will adapt and change you behaviour because of that latency.