Adding delay to MSI installation

Hi everyone, I'm trying to install TeamViewer Host on some thin clients. 

The process is normally pretty straight forward. You run the MSI with a bunch of arguments that cause it to customise itself and bind it to our management account.

The problem is that the thin clients are rebooting as soon as the MSI exits, which doesn't leave any time for the customisation to take place. Does anyone have any idea about how I could introduce a 10 second or so delay in the process?