Recently I upgraded my computer’s video cards to a set of RTX 3090’s. I do a little more than play games with my main machine. These upgrades improved work performance at about half the cost of RTX A6000, even with our current GPU supply shortages and paying scalpers. Back to ESO, I did not expect both video cards to work in SLI as it did with my older professional cards because Nvidia has almost basically killed SLI support on 3090’s as it requires the game developer to build their support. I did, however, expected these cards to allow me to use DirectX 12 as it is fully supported (unlike my professional cards that did not, and I thought ESO already had support for DirectX 12. After doing some googling, I learned ESO does not have DirectX 12 support, but it is coming soon, said ZoS developer five years ago.
https://eteknix.com/directx-12-update-coming-eso/