What specification of PC would be required to run X Plane 11 at the highest configuration - with a good frame rate

Question

At the moment I cannot get a good frame rate with the 'world objects' above set above medium and texture set at medium.

Answer 1

http://www.x-plane.com/kb/x-plane-11-system-requirements/

If you want a satisfying framerate in every situation, the minimum GPU you should aim at is a GTX1070.

Then you have benchmark websites to compare GPUs.

Always prefer Nvidia to AMD GPUs, X-Plane still performs way better with Nvidia, even if this might change along the future updates (slow implementation of Vulkan technology).