I get single digit FPS at default ESSA RW08.
With PMDG B737NX and Milviz B737-200C I get solid 25-30 FPS at the same location
I have elaborated with the settings in the Addon Manager without any noticeable result.
Checking or unchecking the "Hardware rendering" box does nothing.
The only way to get 10-15 FPS is to unselect high quality 3D panel in the FSX settings. And then the FPS
are very unstable.