Does Lemmy perform backlogging?

I just finished setting up my instance and so far, it works quite well. But I have noticed, whilst observing the logs, that activity trickles in rather slowly, although I have a very good uplink - my VPS is situated with Hetzner, and, as far as their marketing speak goes, I should have a rough 20gbit. I don't quite buy it, but it should be plenty fast for communicating. Also, 4-core arm64 box.

I saw that there are admin settings that can be done. Got any recommendations on how to improve my Lemmy's performance?

Thanks a lot!