It’s quieted down a lot in the last few weeks, but I set up https://hackerforums.co to compliment this site for longer running/traditional bulletin board style forum conversations.
Your forum is very fast, did you do anything specific to make it that way? :)
That’s just the magic of using old php forum software. This is just phpBB running behind nginx on a cheap digitalocean droplet. It’s just not using a bunch of heavy JavaScript or anything like most modern software, so even though it’s not a SPA it is still very speedy.