I think it may be that game server (website) problem.You can check the Ping for gaming website at
Whoisxy.com/ping.aspx before playing games.If your ping is high you cannot play games fast.So play games in the website that shows low ping...
While i was playing online games,i checked the ping for the site GameHouse first ,the Ping time was 40ms..Then i checked the ping for Zapak.com , the ping time is 227ms.So i decided to play games in Zapak.com ..Because of low ping, i have chose the site.You can also reset the modem and router whenever your ping high.