RossDxbox

Im having trouble getting the geo filter to work or maybe understanding how it works ? i am playing MW2 in LA Cali and have my geo filter set around the three servers with low ping that are nearby , i have ping assist set to 0 and filtering is on . when i go into a game the duma map gets the big server symbol in the UK almost everytime and nothing usually pops up in my geo filter circle . sometimes i get a ping assist player or ping assist server in or around my circle but never just get the server symbol in my circle . ive gone through the forum and found similar situations and have tried all the factory resets and reboots etc. maybe i just dont understand how it works? i figured if i have my geo filter on then when i connect to a game a server icon should pop up inside my circle , is this not the case ?