I have increased the server parameters a bit. If there are still issues, there is still the option of an upgrade but still... it's a budget VPS, and it requires a few minutes of downtime for the website. I'll keep an eye on it, and I apologize for the unexpected interruption. I have temporarily disabled upvotes and boosts auto-refresh as well. I will check how much it will relieve the server.
@ernest If you're planning on opening donations for server hosting now might be the time, lots of people coming in from Reddit and I'm getting a lot of error 500s. Good luck in the upcoming storm.