Furthermore, have their own HD mesh, but FreemeshX remains the definitive solution for the FSX/P3D ecosystem.
: Fully supports FSX (boxed and Steam Edition) and Prepar3D (v3 through v5, including 64-bit versions). Impact on the Flight Experience
Summary FreeMeshX Global Terrain Mesh 2.0 is a high-resolution elevation mesh for Microsoft Flight Simulator X (FSX) and Prepar3D (P3D) that replaces default ground elevation with more detailed terrain. It aims to improve slopes, coastlines, ridgelines and runway approaches worldwide without changing textures or airports.
“I flew the Grand Canyon default. Then I flew it with FreeMeshX 2.0. I will never go back.” — Common sentiment on the AVSIM forums.