The guess the difference is you mainly operate outside surround and don't run the same programs which will cause issues. When Windows updates, it seems to be a dice toss on how it will open again if you were in surround before the update. Chances are, not surround. No big deal if Ctrl Alt S is working. But it won't let you do that with some programs open. Programs you need to fully kill with the task manager to open up nVidea Surround mode to configure again.
Then there is the task bar. With Surround enabled, you can't set it to the bottom. Yes really. But the vast majority of people have their task bar set to the bottom and mine is set to the bottom and works fine you are thinking. That is only because you set it that way in the normal mode before enabling Surround. It will stick if you already had it setup that way. However, if Window's updates while you were in Surround mode, The task bar will probably start somewhere other than the bottom, you will need to exit Surround, reset the taskbar, than enter Surround again. With Surround enabled, you can go to the Task Bar options, go to where you can change the location, and see all the options but only left and right will work while outside Surround you can set it to the top or bottom as well..
Oh, and there are the half dozen times that Nvidea/Windows seems to forget my custom triple resolution. It will just launch games all funny, you will go to the resolution, see your custom resolution, scratch you head for a moment, than decide you need to set it to something else to reset it and then change back, but your custom resolution is no longer an option. So... you get to close out everything so you can open the Nvidea Control center and setup Surround again. You can't possibly have anything open when you work in th nVidea Control Center, so I hope you did not do something dumb like register for an online race before realign you have a problem.
Then there is the whole problem of different games handling it differently. Plus, you have some windows you can use with a single screen and have Spotify on the left screen for example, but other programs will expand the be the full triple width if you try.
At the end of the day, you end up with nVidea blaming Windows for X, Windows blaming nVidea for Y, different update timelines, differing app support, everyone blaming the BIOS and no chance that it is going to just work 100% of the time.
All that said, it is still the best option for me. I'll just ditch it in a second once a single wrap around display that fully covers my field of vision comes along at a reasonable price.