Professional system building and speed

[Omnistegan]

Hey guys,

I work at a small town computer shop. For the most part we build and repair systems.

One of the most frustrating parts of my job is waiting for windows installs and windows updates. It's a given that I should spend time installing windows and running updates but the sheer time it takes to run the second round of updates on our most built system is extreme (191MB).

Is there anyway to negate some of the time of installing windows updates?

Thanks in advance,
Omnistegan