I had noticed that I haven't seen you around as much in recent days. Reading around, I see why. Hope everything is well for you and your family. Take care. :)
Open the game's mod folder, create a folder with any name. I called it 60FPS. Inside that new folder, create another called exefs. Inside that, put the ips file inside.
You don't need to backup anything. The firmware won't touch anything. Just grab the latest firmware and install it as normal. If something goes wrong, (which it really shouldn't), then it's no big deal. Just try again or download from another place.
Ignore the rude people here. I had this problem too. Go to settings > Graphics > Extensions. On Vulkan Dynamic State, put Extend Dynamic State all the way to the left. Have fun with the game. :)
I've been playing it. The game does have it's fair share of bugs. Had the issue of not being able to talk to other people. But using their "Emergency Rescue" feature fixed it. Other than that hiccup, it's very promising so far.
There are a lot of factors to consider. Fallout 3 has been out for 17 years. In that time, a lot has been figured out, so making mods for that game is easy. Xenoblade Chronicles X DE has just released. Yeah, there's going to be stuff to work out. So "2 hours work" is not going to happen. Try...
They're talking about making the exclusive online content accessible offline. And to answer the question, it might be. So far the game is looking identical to the Wii U version. Not going to say it's it's possible yet, but it's likely doable.