Re: Test Web Sites
Reply #21 –
Reading
the above discussion at ServerFault now I know why my cookie-free domain at https://cdn.sch.my is not working. To make it works I changed it to other domain instead.
As for the query strings, I disabled the default code in SiteCombiner.class.php at line 398-399by commenting them out:
//if (!empty($this->_stales))
//$this->_archive_stale = '?x' . hash('crc32b', implode(' ', $this->_stales));
The score now increases and at https://tools.pingdom.com/#!/cSKvto/https://elkarte.sch.my it has achieved 100% 
For now I think there is no need for me to use any CDN, as my DNS server is CloudFlare thus it should serve any users quite fine wherever they are from.