That's because Razed.com uses Cloudflare on their end... well, that's to protect the website from malicious bots and ensure a safe online experience, as explained in the image below:
I experienced the same thing whenever I try to access the website but it takes less than 15 seconds and I am granted access to the website. If there is any delay, it comes from the person's Internet provider.
I just checked to visit Razed.com and I am currently on a network that is not that fast because I am having trouble visiting other websites. Even then, like you, it took me about 15 seconds to access the Razed.com website. Since I got smooth access without any interruptions even on a slow network, I don't think other users will face any problems.