Quickbooks Desktop Shopify Connector Slow

Anyone have any tips on getting the Shopify Quickbooks Desktop connector not to run poorly?

Our store does enough traffic to where my nightly sync isn’t even making a dent in the number of items to sync. Some nights I can sync about 200 items over 6 hours, others I can maybe get 20-50.

I have tried all support options and am starting to wonder if this is the right solution.

Can you fill me in on how that will help an issue I am having with a Quickbooks connector?

The program barely works and is all but useless at this point. I love Shopify POS, but I am looking for alternatives as they do not seem to care anything about users who have Quickbooks Desktop.