Why is the monitoring taking so long sometimes?

This problem can be caused by the fact that when installing some programs or drivers your Windows in accessing the registry a lot of times. In this situation the real-time monitoring feature of the Installation Monitor can slow down a lot the computer (it might even look like the computer is completely blocked).

In such situations I advice you to right-click on the "M" icon of the Installation Monitor. Then choose Settings. Change the Monitoring type to "Monitor registry by making snapshots". The monitoring will be a little slower in the beginning but it might perform faster overall.

After finishing the installation of the program, you can switch back to the "Live monitoring" option which usually performs a lot faster.

Also, please note that the "slow down problem" appears for almost any monitoring program.