Multiple monitors (more than 2) not working on Fedora 38; how can I fix this?

Having used Fedora as a server since Red Hat 1.1, I FINALLY decided to replace my aging user-interface Windows 7 with Fedora Workstation but I just can't seem to figure out how to get it to honor all 6 of the monitors.

It's not that I loved Windows, I stopped "upgrading" at 7, but it worked fine and I've been running six identical monitors on three identical twin cards for about 22 years now (on various versions of Windows). Hey, it's a tool that's worked as a user interface while I muck around with Unix / Linux servers and it let me do office-stuff the same way "the rest of the world does."

...The Windows 7 system was on an older but not ancient ASUS Intel-CPU motherboard and it's got a hardware issue I don't want to have to fix. So, for the change I took a younger ASUS motherboard with an AMD CPU of about the same class (3.6 ghz, lots of cores), fed it 64G of ram, and moved the same exact video cards over between the boards.

In setting up the system, I was patient - wanted to know it would work: I took another extant Fedora (Server) disk and used it to see if the video cards worked and it was able to use all the displays, so I figured all would go well even though the setup area only had two I could test at a time. All cards checked out, and even two from the same card and also one on two different cards. So, I figured it would work.

I then added the Fedora Workstation and was also able to test two displays at a time - so far so good.

But when I tried to use more, it just wouldn't let me configure them. At first, I tried it with six all at once, it just hung and I was forced to power it off to get its attention. Later, with fewer displays, I was able to log in through the net so I didn't have to power it off or hit reset to restart. Eventually I've got it working on TWO monitors, a far cry from the 6 I want / need to be using!

Note that I'm skipping all the details about what was on the displays that were powered up and connected but not (yet?) recognized. In short, they all displayed something, just not coherently, and the incoherence changed in odd ways. ... But I don't think that matters, though it might.

... I figured Linux was mature enough for this by now? If I'm not wrong, how do I fix this?

I'm happy to share whatever software / hardware details about this setup that may be required and will respond - and add the data to the question - upon request.

The only anomaly of which I am aware is:

It's Fedora Core 38 starting with Server with nearly all of workstation installed, too. However, the groupinstall of "Fedora Workstation" balked at some conflicting hardware related packages from Fedora Server that come with Fedora Workstation, so I went with the ones from Server which were younger.

Beyond that, I'm not sure what exactly to share.

Hardware

Three video cards: NVIDIA model P1310
Motherboard: ASUS Pro WS X570-ACE
Displays: ASUS VS239H-P (Not so sure about the H-P part as both are on the ID tags)

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