Another idea from me, maybe you can try to focus on daily or weekly of highest-rated posts and ignore other posts. These are the examples (created by Colin Percival):
Daily stories https://www.daemonology.net/hn-daily/
Weekly Ask HN https://www.daemonology.net/hn-weekly-ask/
Weekly Show HN https://www.daemonology.net/hn-weekly-show/
The highest-rated posts usually have interesting comments from HN users.