@nebulon Will do. I've checked today and see the sync tokens grew a fair bit again, although right now performance seems to still be okay. So I'll monitor a bit over the next week before filing a ticket just in case it grows back to where it was but still syncs quickly, as that may indicate something related but different as a root cause.
@nebulon I was hoping to force emails as the username, but that's fair. haha. I am a bit OCD and since most online accounts use email addresses, I was hoping to keep that consistency in anything hosted in Cloudron, but I suppose that's not possible anyways since every app is a bit different. For example, Invoice Ninja requires an email address rather than a username, and same for Bitwarden. Others will take either format, such as Matamo and WordPress, etc.