A strange pseudo fix.... I removed the video card altogether and the AMD processor video got XPlane11 to 30 fps on one screen. It might be that there is something going on with the PCIe bus. My MB and Processor indicate that only 2.0 is supported (not 3.0), but I don't think that should be a problem, all 3.0 boards will run 2.0? Might just be the old video card just didn't work.
More when I get some of this figured out, but any suggestions would be helpful.