I'm having the same issue since last Friday. When we click on customer invoice, it's slow to open, then it's slow to be able to move around in it and it's slow to save and send. I called Monday morning, Tuesday afternoon & no fix! It's been going on since last Friday! I'm so frustrated because it's impossible to invoice our customers or create new invoices! They need to move this to the top of their priority to fix or I'm finding a new database to use and transfer all our information over at the start of 2023!