I am aware. I removed some comments about this from the logging out issue topic, as it's a different issue.
We have been under a DDOS attack for about 3 days now. This is nothing malicious for you, just for me. They bombard the server with requests that end up pinning the CPU and slowing things down. One of the perks of being a popular site.
I have seen as many as 12,000 requests from the same IP over a 5-second period. I block an IP, and they just move to another.
This is what is should normally look like, 5 to 15% CPU usage...

When they attack, and the site is slow, the CPU is at 100%. The requests, legit and malicious, basically have to wait in line.
I'm working on a solution, which will likely be Cloudflare. I've been trying to keep up with the IPs myself and blocking them since that would just be another monthly fee, which will likely put us around $425 a month to keep the lights on.
I activated Cloudflare on the stamp site about a month ago, and it broke some things. So this will be some work to implement and will likely cause some bumps along the way. I will thank you now for your patience.