Keep session alive Remote Desktop

I'm using AutoIt to automate GUI operations [connecting to the machine that's running the to-be-automated app, using RDP]. Whenever I minimize the RDP window [using mRemote] no further AutoIt commands are performed.

Maybe the RDP session is marked "inactive" when I minimize the window [I don't know if that's true, nor how to configure this behavior, if so]. I'm thinking about 2 options to overcome this:

1. Running my process as some elevated user [or a service].
2. Finding this configuration which controls whether session is marked inactive and override it.

How to keep remote desktop session "alive" when the RDP window gets minimized?