In 2011, Error 504s happened every day. This was when lucid had a bad server.
Then he moved to a better one. It hardly ever crashed and was much better, but of course cost more.
Now, since much less people visit the site compared to before, rather than solve this issue, it's clear that he's moved back to a shittier server or decided to pay for a cheaper option (it's still CloudFlare), since there are less people on the website now. I think this is the reason why the 502s are coming in and the site is breaking a lot more now. I don't know for sure, but it would make sense
Could also be bad code.
I don't think it's ever going to be fixed, lol.