Tylux on "[Plugin: W3 Total Cache] w3tc stops serving caching unless I reload php5-fpm"

Hello,

W3 Total Cache works well but about once a day it stops serving cached files and the only way to get it to start working again is by doing a 'php5-fpm' reload or restart.

I am using nginx, php5-fpm and xcache.

Any ideas? I am not sure where to start troubleshooting, i have looked in my php5 error logs but no luck.

Thanks!

https://wordpress.org/plugins/w3-total-cache/