[Darryl Ramm]

The typical reason for doubling like this with any DAW or interface combination is you having both software monitoring in the DAW and hardware monitoring in the interface enabled. You need to select one of the two and use that and disable the other.

Many new users underestimate the need to spend time to understand their modern interface hardware monitoring. You need to read the documentation and play around. Including playing with that with no DAW active so you can be sure that the hardware monitoring is all you are hearing, including make sure you know how to disable everything, and confirm that works as expected, if that is what you want to do.

It might also be possible in some cases for delay or reverb effects in the DAW or interface to cause similar behavior. You should be starting as simple as possible in a trivial simple DAW session, with no plugins, and no effects enabled in the mixer/monitoring in the interface.