Whilst experimenting with X-Plane DataRef USB interface, with an Arduino UNO and Ethernet shield, I found that I was receiving Null value Datarefs and loosing many of the Datarefs that were being sent.

Now, go ahead and open up X-Plane 11, click on settings, and navigate to Graphics. Visual Effects and Texture Quality: The level of detail and how everything looks, can be defined by these sliders. These depends mostly on how much memory your GPU has. Log.txt for X-Plane 11.11r2 (build 111101 64-bit) This log file is generated automatically by Laminar Research applications and contains diagnostics about your graphics hardware, installation, and any error conditions. If you need to contact tech support or file a bug, please send us this file. 3jFPS-control-1.23 - Documentation 1 Introduction 3jFPS-control is designed to give you a smoother flight experience, by automatically reducing world view distance and/or clouds density/size in real time, when your FPS go to low. When the frame rate. I've had exactly the same message when installing X-Plane 11 beta. The install seems so have gone okay (after a few internet interruptions) but the application will not run because X-Plane cannot open the graphics interface file. I have moved nothing out of the installation folder. I have a purchased copy of X-Plane 11.

Free Plane Graphics

As a further experiment I switched to using a Teensy and the FlightSimControls Package that came with it. This has been quite successful so I am progressing to a full design along that front.

X Plane Graphics Interface File Download

The current X-Plane Interface is

The physical design uses multiple Arduinos and is documented on the
X-Plane Circuit Design page.