Hi FSX-er,
I know exactly what you're talking about. I started my 3 monitor setup two years ago, and it took me quite a while to find a solution. I tried (and bought) Display Fusion (nice tool), but this is far from solving the problem.
To put it short, you can't stay in surround mode if you want to use your PC for work. There's a number of issues (e.g. Team Viewer), so switching between surround (for gaming) and extended mode (for work) is mandatory.
Best solution I found so far is this:
https://hardforum.com/threads/quick-swi ... d.1590030/This basically is an AutoHotkey script that triggers the driver- embedded functions, but once configured correctly (via .ini file, instructions are included, no rocket- science really) it switches back and forth smoothly, without any inputs necessary.
Warning: this doesn't work if you're using SLI.
Give it a shot and report back should u have any questions, I'm glad to spare you the time I've put into this, it's a shame NVidia is offering surround mode without properly supporting it.