After adding more zombies you can always find one to kill you ;-)
I'm against as well.

Yup!

Cant confirm.

2. and each subsequent refresh is slightly slower, but do not kill my internet connection.

My home network:
ISP -> NAT router -> switch -> PC
Router OS & switch OS report no problem or connection lost.
Browsing works fine.
Connection speed 2/2Mbps
Using Mozilla Firefox as browser.
I have router firewall on & PC firewall on also.