The Final Fantasy XIV Endwalker Official Benchmark uses actual maps and playable characters to assign a score to your PC and rate its performance including scene loading times.
The benchmark gives an overall load time as well as loading times by scene.
The Seagate FireCuda 540 does well enough in the Final Fantasy XIV Endwalker Official Benchmark. It doesn't top any of the results charts and indeed, oddly, it sits near the bottom of the Scene 1 load time chart but sits in fourth place in the overall load time chart.