I run two computers into one monitor using different input ports - VGA and DVI. One button-press to switch over.

Is your upgraded Win10 64-bit? Is any of your existing software or drivers 32bit? If so, look into that.

Windows may force your hand by dropping support for some piece of hardware. I keep a Win10 machine just to test the feature-upgrades before my wife's laptop gets them. It dropped support for the display adapter and it reverted to low-res. And sometimes when the laptop gets a feature update I have to reinstall the (Win7) scanner drivers in compatibility mode. I expect that won't work one day.

I'd not heard of JBOD but that's what I have.