Firefox over X11 with Xming

I use the xlaunch files like this:

<?xml version="1.0"?>
<XLaunch xmlns="http://www.straightrunning.com/XmingNotes" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.straightrunning.com/XmingNotes XLaunch.xsd" WindowMode="MultiWindow" 
ClientMode="StartProgram" Program="firefox" ClientStart="PuTTY" PW="password" PathToProtocol="C:\\WINDOWS\\" 
RemoteHost="host" RemoteUser="username" ExtraSSH="-X" Display="0" Clipboard="true"/>

For a faster experience I use blowfish instead of aes. Also, rendering done at the remote site is done at a frame rate using the layout.frame_rate in about:config. I set this value to 5 instead of -1.