Magento后端运行缓慢

We have a Magento website running on one of our linux servers. Running Php 5.6.17 no CGI on Apache 2.4.18

The Magento ver. 1.7.0.2 website has 1025m set in php.ini.

MageWorx Admin v1.1.1
Advanced Product Options v2.9.13
Extended Sitemap v3.1.2

Cache management settings are all enabled: Layouts Blocks HTML output Translations Collections Data EAV types and attributes Web Services Configuration Web Services Configuration Catalog Permissions cache TM Full Page Cache

Database is running on MySQL 5.6.28 with a size of 1,99 gb. With over 19k products.

I hope you have enought information. Now the question:

What other options do i have to speed up the backend CMS sytem. It takes over a few minutes to add a new product. This Specific happens on the screen

New Attribute / Manage Attributes / Attributes / Catalog / Magento Admin. It takes about 5 min when i press save.

http://imgur.com/MMxVOct