Revert "Using four cpus seems to work, again."
Revert "Using four cpus seems to work, again."

Because, nope.

This reverts commit 7d63e9bc98dcbec20021a06ddc413b7deee94dd4.

christophe-de/wk3-ansible,christophe-de/wk3-ansible,christophe-de/wk3-ansible,christophe-de/wk3-ansible