x-Plane 11.20

Question

Hello,
I've upgraded x-plane to version 11.20.
in 11.11 had a fps from 30 to 35.
in 11.20 this is only 15-20 without any changes to the configuration.
What happened. My graphics card is good Radeon R9-390 with 16 MB of memory.
Driver is up to date. How do I get back to 11.11?

Answer 1

Once a version of X-Plane is considered "final" (as X-Plane 11.20 now is) you cannot go back to an older version unless you have made a personal backup of your install.

Answer 2

May question is:

I've upgraded x-plane to version 11.20.
in 11.11 had a fps from 30 to 35.
in 11.20 this is only 15-20 without any changes to the configuration.
What happened. My graphics card is good Radeon R9-390 with 16 MB of memory.