Disable "Windows Explorer Extension" + silent install

Hi all,

I have to distribute LO (4.2.5) via silent install and want to switch the “Windows Explorer Extension” off. I tried to figure out what to disable or delete within the .msi using Orca, but couldnt find it … is there a way to do so?
It is just for testing, because some ppl think that this extension slows down LO - thanks!