Hi @classiter
Do you have DeviceHub installed for Acumatica and are you using that?
Here is an older blog that might help:
Configuration of the Device Hub - Acumatica Cloud ERP
@classiter I think you will probably have to benchmark the various processes going on behind the scenes (business event triggers, database calls, etc), in order to figure out where things are bottlenecking. Business events are basically a form of database trigger, and so if you have a high volume process that is triggering the event constantly, you could run into performance issues from making the same database queries, same api calls to Stamps.com, etc repeatedly all at the same time on top of one another.
You don’t necessarily have to be locked into the way that Acumatica talks to stamps.com. For example, if it would be way more efficient to bulk provision postage for the whole set of orders in one go, and than assign that postage to orders throughout the day, you could probably create a customization to do something llike that.
Sometimes the integrations in Acumatica aren’t build around high-volume processes, so just because the integration is there, that doesn’t mean it will work well if you are trying to use it 1000x per second. You may have to get someone to help you architect the integrations around the high volume processes to make them more effiicient. A small delay of 3-4 seconds is probably irrelevant if you are only provisioning postage once per hour, but it is very significant if you are provisioning it once per second.