Hi N958DC,
I am not with Laminar Research or Laminar Research; just a flight simmer from down under.
Considering your login name, you have an association with an aircraft with the same registration and most likely living in the USA.
Have a look at the videos in the following link found at https://www.youtube.com/user/col2mab/videos produced by Michael Brown. Michael owns and operates a PC supplier company called XForcePC and Laminar Research recommends this company to supply PCs capable of running X-Plane.
In particular have a look at a video created about 3 weeks ago whereby Michael performs comparison tests with the RX580 card.
I understand this is an AMD card. AMD GPUs and CPUs haven't performed as well as NVidia GPUs and Intel CPUs.
Unless changes are made in the planned 11.30 release, X-Plane does not work in SLI mode.
How many monitors. Consider the advice in the videos from Michael. If you live in the USA contact Michael for confirmation.
Good luck
Glenn