cc deny degrading performance

[screege]

I have noticed that when putting cc deny codes the server performance will go down, here is my cc deny list: ua,tw,ru,al,dz,tr,pl,cz,de if I put them and wget a 1gb file the server will download it at just 6 Mbps, if I leave the field empty I will download the same file at 90mbps.

I need to put the list like this because of hackers of wordpress and joomla sites mostly.

Can anyone help?

[screege]

With cc list
Saving to: “1gb.bin”

3% [=====> ] 39,329,249 5.71M/s eta 2m 41s ^

without cc list


Length: 1048576000 (1000M) [application/octet-stream]
Saving to: “1gb.bin”

34% [=======================================================> ] 358,364,233 84.9M/s eta 7s ^