Scheduling AP Postings

We are looking to schedule AP Postings (Invoices and Payments) to happen after hours. Has anyone had any experience with this? I looked into using a Process Set and adding the posting to that, but it does not delete the posting from the process set once it posts, so it continues to try to post it every schedule run.

And the business reason is?

We are having performance issues during the day when postings are happening. Trying to relieve some of these issues by moving them to after hours

How many invoices are you posting? What performance problems are occurring? We sometimes post several hundred invoices without issue. It is usually several smaller
groups of around 100 each that get posted though. Where is the performance issues showing up?

Usually it is when we have multiple users trying to post.