In recent years, the PCSX2 development team officially , starting with version 1.4.0 and concluding with its complete removal in later nightly builds. Several technical factors drove this decision: Pcsx2 0.9.8 You Need To Update Some Directx Libraries
However, modern consensus suggests that if your PC is too weak to run the newer renderers, it likely lacks the CPU power to emulate the PS2 smoothly regardless of the API. pcsx2 directx 9