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.
Cloudflare verification is nothing to worry about, as you simply need to follow the instructions. This depends on the user ISP, especially if they are in a country where gambling is prohibited. Razed has been running very smoothly so far, with no issues as Cloudflare verification only appears once.