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 Crucial T705 with Heatsink does ok in the Final Fantasy XIV Endwalker Official Benchmark with a mixed bag of results with scene loading times. It tops one (Scene 2), is in last but one place in another (Scene 4) and somewhere in-between for the remaining three. Overall it sits third in the Total Load Time result chart, just behind the standard Crucial T700.