Well, first you're getting a performance boost by running Dolphin on Windows instead of macOS, basically because anything that utilizes GPU and doesn't have a backend written for their proprietary Metal API runs like garbage. Then, you're getting another performance boost because you enabled Skip EFB access from CPU, but keep in mind this option breaks game mechanics depending of the title (e.g. you can't pull/throw stars or use Yoshi's tongue on Mario Galaxy, graffiti from Mario Sunshine behaves oddly/can't be cleaned, the scan visor on Metroid Prime doesn't display correctly, etc).
And finally, Dolphin system requirements aren't that high considering what we have nowadays. A reasonably clocked Haswell CPU (Intel's 4th gen) or newer is powerful enough for anything you can throw at Dolphin at native resolution, add in a GTX 750 ti or equivalent GPU and you can safely run all games at 1080p (and sometimes even higher) with various enhancements...
And finally, Dolphin system requirements aren't that high considering what we have nowadays. A reasonably clocked Haswell CPU (Intel's 4th gen) or newer is powerful enough for anything you can throw at Dolphin at native resolution, add in a GTX 750 ti or equivalent GPU and you can safely run all games at 1080p (and sometimes even higher) with various enhancements...
Avell A70 MOB: Core i7-11800H, GeForce RTX 3060, 16 GB DDR4-3200, Windows 11 (Insider Preview)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)
ASRock Z97M OC Formula: Pentium G3258, GeForce GT 440, 16 GB DDR3-1600, Windows 10 (22H2)