I had an issue running Arch on a Surface Pro 3 a while back where Wifi would drop after some hours - I couldn’t ping or SSH in but the device itself could reach the internet.
I found a post mentioning Wifi power saving mode and disabled it, and it fixed the issue for me. I’ll look and see if I can’t find it, and update here if it looks relevant to you.
Also, I would definitely try with your laptop wired instead of wireless if you can.
The second one, Emperor’s Fist - https://www.goodreads.com/book/show/759963.Emperor_s_Fist
Books 2 and 3 to this series: https://mtg.fandom.com/wiki/Legends_Cycle_II
24/7, no UPS since I am cheap and lazy.
My media center PC has a sleep schedule, though, and goes into suspend in early morning hours. I am sute the power it saves is next to nothing.
I used to do this with my server, too, but scrapped that once I started needing it on randomly at night.