Sorry - i guess some more info would be helpful. It's been really hit or miss where the slow parts occur.
Everything appears fairly normal unitl we get to the System Configuration phase. I can tell that the provisioning agent that installed near the beginning can take 15 - 30 minutes to install. I think it was only taking about 2 - 5 minutes prior to the upgrade. It seems like all software distribution is extremely slow after the provisioning agent is loaded. For instance - Adobe Reader took almost 30 minutes to install just on it's own.
I've also noticed that the Windows 8.1 template that worked prior to the upgrade always fails at "Deploy Image". Our Windows 7 templates deploy the image fine. When the 8.1 WIM fails to deploy, I look at the C drive and I see a couple of folders there, so it looks like it starts to deploy and then fails. I've looked in the log files but haven't found much useful information.
Thanks for the help!