Confirmed that the changes worked. The last restart of Sidekiq was 11 Oct 12:48 pm.
Memory stats today:
The forums here has useful threads (linked above) that were helpful. Hopefully this also helps someone else facing similar issues.
What I’ve found is that my forum does not get anywhere near the amount of traffic required for 8 workers. Even 2 would have worked fine.
That said, on my server, memory seems to be the main/future bottleneck, but I plan to continue to run the VM at the same size. Since swap is on very fast NVMe in RAID 10, I will eventually in the future add zswap and update this thread in the years to come if/when traffic requires that.