Poor WAMP performance when using SMB/UNC Paths

Question

I've configured a WAMP (Windows Apache MySQL and PHP) stack when when configured to use local storage takes 3-4 seconds to load. When I use an SMB/UNC share it takes 12-15 seconds to load.

Here are the two lines in my httpd.conf:

 #DocumentRoot "//10.99.108.11/test_htdocs"
 #<Directory "//10.99.108.11/test_htdocs">

 #DocumentRoot "C:/www"
 #<Directory "C:/www">

Is there performance tuning I can do on windows server 2008 R2 to improve performance or is there another way to improve performance using smb