Invoice Updating very slow

Noticing long wait times when updating invoices or other items in the system after migrating to v5.

For example, updating an existing invoice in the system is taking 8+ seconds for a TTFB response:

https://invoices.xxxx.yyyy/api/v1/invoices/k8mepEyaMy?include=history

This is on a VPS server that performs very well with all other sites hosted on it so I don’t believe it’s tied to resources?

Hi,

What method are you using to generate the PDFs?

cc @david