TTFB and WooCommerce Cookies Solve?

in reference to this previous post about 5 months ago

my TTFB is worst i have seen.
is this issue solve?

W3 Total Cache by Frederick Townes version 0.9.3
WC Version: 	2.0.18
WC Database Version: 	2.0.18
WP Version: 	WP 3.7
Web Server Info: 	Apache
PHP Version: 	5.3.22
MySQL Version: 	5.1.67-rel14.3-log
WP Memory Limit: 	2 GB

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