Improve Amazon & eBay synchronisation speed
The facility to "Mark order as despatched when label is generated" does not sync with Amazon and eBay in real time (in our test it was over 10-15 minutes) which means that there is a real risk of picking and packing orders twice.
Adrian @ Serpro commented
We have actually done that on several occasions
When the parcelforce integration is working it's quite quick. When using Hermes integration it is instant.
So it can be done.
Spose the answer will be server load, use more servers and load balance them is the answer to that response.