This site is being deprecated.
Please see the official X‑Plane Support page for help.
I am not from Laminar Research; just a flight simmer from down under.
Because you are getting very low frame rates strongly suggests to me your system does not meet the recommended requirements for XP11 let alone XP10. To run X-Plane successfully you should be getting somewhere in excess 25 fps. Have a look at the following link found at https://www.x-plane.com/kb/x-plane-11-system-requirements/
Because X-Plane is resource hungry and generates a significant amount of heat in the GPU and the CPU your system should have a good cooling system within your case.
If your system meets the system requirements you need to ensure your GPU drivers are up to date irrespective what your operating system tell you.
Also you may wish to run the following test found at https://cpu.userbenchmark.com/Software to determine if there are other issues with your system
Now if all of the above tells you that all is "OK" then I would recommend you contact Laminar Research direct at firstname.lastname@example.org
This site is no longer being actively maintained.