Change lines like this:

%Sock GET / HTTP/1.1
%Sock POST /game-login.php HTTP/1.1
%Sock GET /compress.php?r=statistics HTTP/1.1

and every other HTTP/1.1

like this:

%Sock GET / HTTP/1.0
%Sock POST /game-login.php HTTP/1.0
%Sock GET /compress.php?r=statistics HTTP/1.0

When you use HTTP/1.1, the webserver (not mIRC) returns the data in clustered mode. HTTP/1.1 sends the data in groups of a specific length, instead of each line by itself. HTTP/1.0 sends data 1 line at a time, separated by $crlf.

Make those changes and see if it works.

-genius_at_work