This is the million-dollar question. We now have Microsoft Flight Simulator 2020 (and 2024), which features native DX11 and DX12, global streaming scenery, and real-time weather.
However, Steve's DX10 Fixer remains relevant for a specific niche:
The Verdict: If you are building a new PC, buy MSFS. If you are tying to breathe life into an old PC or an old FSX library, Steve's DX10 Fixer is the single best $15 you will ever spend on flight simulation. steve%27s dx10 fixer
Most third-party airports (from developers like ORBX, FSDT, and FlyTampa) were designed exclusively for DX9. Steve’s Fixer includes a library that intercepts legacy DX9 draw calls and translates them on-the-fly into DX10-compatible instructions. This means your expensive add-on scenery just works.
The primary selling point of Steve's DX10 Fixer wasn't just prettier graphics; it was raw performance. This is the million-dollar question
By switching from DX9 to a fixed DX10 API, you shift a massive portion of the rendering workload from the CPU to the GPU.
The Result:
Steve's DX10 Fixer works hand-in-hand with a free tool called Nvidia Inspector. You must set the following profile for fsx.exe:
The most immediate benefit users notice is the stabilization of the visuals. The Fixer corrects the depth buffering issues that caused the infamous flickering shadows and terrain textures. Suddenly, the world becomes stable and solid. The Verdict: If you are building a new PC, buy MSFS
