Greetings,
We have deployed a web application developed in Scriptcase 8 (of course!) on a Windows 2008 Enterprise server (Intel Xeon E3-1240 @ 3.50Ghz, 2TB SCSI HD) that uses the XAMPP stack (XAMPP 1.8.1, Apache 2.4.3, MySQLm 5.5,PHP 5.4.7), . I know that the speed of a Web Application depends on many factors but, I was wondering if the company (Scriptcase) recommends a specific server stack or if Zend Server can make our application run faster. 

Does anybody know what is the platform or the stack that Scriptcase (the company) recommends for better performance results?

The server has 64GB RAM server and we have seen little improvements. DB has proper indexes, it is not a gigantic DB. The Internet connection can be improved but the thing is that even if we run the app locally in the server is not lightning fast. The only other alternative I was thinking is replacing the XAMPP portion of the Web Server and PHP and use the Zend Server product from Zend company. I could also try NGINX but will have to learn it first as well.  

I would appreciate you guys could share what optimizations you have done or the specific server stack you use for production servers (the only thing is that the server has to be Windows not Linux... sorry, huh?).

The hardware above described is a powerful server but, I am suspicious the free XAMPP stack is what is giving us most of the slow response times apart from the Internet connection speed.
Other option would be to upgrade the XAMPP version to the newest: 5.6 that comes with MariaDB instead of old MySQL.

Thank you in advance for your ideas.