CW3 not able to easy access the maps, scores, and similar things server. My internet is good, but not being able to submit score or doing anything that requires server connection sometimes takes very long time to load and the game stops doing it?
When you say your Internet is good, what does that mean?
Go to Speedtest.net, and check your local speed. Then select a server in Dallas, Texas, USA (That's where Linode data center that hosts Knuckle Cracker is located.) re-do the speed test and report the data.
You can also Ping Knucklecracker.com and report the ping times.