Very slow download speed

I have installed cod4x 21.1 and when I enter any server to download its mods, the downloads are very slow around 10kb/s to 15kb/s, and I have returned to a very old version that would be 1.7, and I download at high speeds. I have done everything, I have restarted my internet, I have uninstalled the game, I have created several profiles and nothing, the servers or my Internet are not the problem.

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inform the server administrator about this

Either you have disabled fast dl, this can be enabled with the command /cl_wwwDownload 1

OR the server owner has not setup fast dl properly