Freezing On Sky UK - Help Needed

hi i have a new server, i have only 5 people on this including me, and i keep getting random freezing, it freezes for around 3 - 4 seconds at a time, and its getting really annoying i have tried lots of differnt configs and i still get the same result.
here is my config

[SKY DIGITAL UK - 0963]##############################
CAID:0963
PROVIDERS:0
ONID:0002
PORT:
SID LIST:
KEY:01 02 03 04 05 06 07 08 09 10 11 12 13 14
ECM CHECK:YES
DCW TIMEOUT:2500
DCW HALFNULLED:YES
DCW MAXFAILED:10
SERVER...

Freezing On Sky UK - Help Needed