Help: why the navigation whit comodo is so slow?

Hello, i’m using comodo firewall on my pc (no router, no lan ext only my pc) since last week but the whit this firewall the navigation on the net is very slow and i need to wait for a while to see a web page. Is this a common situation for all comodo users? Is there a way to improve the speed (whithout comodo the speed is ok)

afternoon. out of curiosity what av program are you using. i had kav and system went to a crawl. frank.