OK so what appears to be happening here is that we're sending the gzipped version of your page but the web server is misunderstanding it and probably double compressing it.
I think the way we can fix this is to give you the option to disable gzip compression within Falcon which will mean that your server will do some extra work to compress each page, but it will still be super fast. The alternative is to leave Falcon creating gzip compressed pages but figure out why your server is double encoding it.
Any thoughts on this? Are you able to send me your apache config file? Are you running anything in front of your server e.g. Nginx or Varnish?
Regards,
Mark.