Little story.
When I visited family years ago, I had two stops. My Mom's, and my brother's houses. When spending the night at my moms I would be awakened by the ac when it started. If I spent the night at my brother's, a solid night of sleep was the result.
For those that didn't know, I had to leave the boat to visit, I didn't have such luxuries on the boat.
Why was I able to sleep at one house but not the other???
My mom's ac was on the roof, my brother's was a split!
If you want quite as I do consider giving up some basement and get a dual zone inverter mini-split installed!!!