Backup schedule will not use faster backup method

Question

Hello,
I am currently using Windows Server Backup in Windows Server 2008 R2 to make a copy of our Exchange server. When I initially set the schedule it was configured to use the normal backup method, but after noticing that it was taking an exceedingly long time
I went into the Performance settings and selected the Faster backup option.
The faster method works great if I use the Backup Once option, but for some reason the scheduled backups still try to run the normal, non-incremental backup. I can't find where to change this in the schedule. 
**I know that the first time you run the faster backup it needs to make the full backup. It has done this(it takes about 3 days) and every time I have run it since using the Backup Once option it has worked fine(takes about 1 hour). Once again, the issue
is that the schedule will not use the faster option and tries to use the normal backup every time.
Thank you

Answer 1

I am backing up to a network location. When I use the Backup Once option and assign it to use a network location it is able to do the Faster backup. It doesn't make sense that the faster backup works when I do it manually but doesn't work when if it is
initiated by the schedule. They are both going over the network.