[Plugin: W3 Total Cache] compatibility with phpbb_recent_topics

I am using this plugin W3TC but when I installed phpbb_recent_topics and configure its settings, my site have become super slow.

Here is the link of phpbb_recent_topics,

http://ww.wp.xz.cn/extend/plugins/phpbb-recent-topics/

And here is the thread of phpbb_recent_topics that I was created,

http://ww.wp.xz.cn/support/topic/plugin-phpbb_recent_topics-phpbb-mysql-server

Please help me to make phpbb_recent_topics and W3TC work. Thanks.

http://ww.wp.xz.cn/extend/plugins/w3-total-cache/