If you find an old installer for Duende Native v3.6.6, it is still sonically excellent. The algorithms haven't "gone bad"; the saturation, the EQs curve, and the bus compressor attack times are still industry benchmarks.
The Duende Native collection is built on the same algorithms used in SSL's digital consoles, ensuring you get the most authentic emulation possible. If you find an old installer for Duende Native v3
However, for the niche of engineers who still run Pro Tools 10 on Windows 7 or a "golden-age" Hackintosh, v3.6.6 represents the last time SSL wrote code purely for performance, not for subscription analytics or cloud features. It is lean, mean, and sounds like a console rather than a math problem. the EQs curve