I enjoy using Codeforces for competitive programming — the problems and community are great.

However, the site is often very slow:

- During contests, the site can become extremely slow or even crash.

- The rating page (filtering by country, organization, etc.) can be laggy and prone to crashing.

I’m curious whether this is mainly a scaling issue, an infrastructure limitation, or something specific to how Codeforces handles contests and ratings.

It’s understandable that contests can crash under high user load, but Codeforces has been around for over 16 years — why hasn’t this been improved?

Thanks!