Pcsx2 1.5.0 Dev Build Info
: The Software Renderer in 1.5.0 is significantly more accurate and often performs better in titles that previously required heavy speedhacks.
If you are still using a 1.5.0 build (or are looking for the specific compatibility it offered), here are the recommended settings: pcsx2 1.5.0 dev build
Even the best dev builds have quirks. Here is a quick troubleshooting guide: : The Software Renderer in 1
