Entering or updating AP Invoices

Summary

Performance issues with AP Invoice Workcenter

Content

Is anyone else experiencing slow performance when clients are manually entering or updating AP invoices?

We have a large user base, with some 60 business units. Each is responsible for their own AP invoice entry and updates. There's a large mix of how invoices are processed into the system, be that using Oracle AIP, Open interfaces, spreadsheet or manually entering them. However our client base is finding it extremely frustrating when entering invoices manually (PO and non PO match) and even worse when manually updating invoices, e.g. updating tax lines. I have logged various SR's on this, but not getting very far very fast.