Upgrade to 0.18.3 completed!
You can read the change notes here: https://join-lemmy.org/news/2023-07-28_-_Lemmy_Release_v0.18.3
There should be some major performance improvements from this one, but this instance is on hardware big enough for a much larger userbase so I don't imagine we'll see much change. But it will be good for later on if the community expands.