@Junkhacker Yeah, I’m with Wayne on this one. Do a sanity check with a second 5450. Just in case there is something wonky with this unit you can rule it out by compare and contrast.
As will all systems, make sure it is on the latest bios and be sure to reset the bios settings back to default first then make any system required changes.
I also found out through testing the target hard drive will have an impact on deployment times. Does the unit have a ssd or a rotating hard drive?