Just conducted an experiment to see whether which device is faster when loading TSW. Setup: XBox One S 500GB 5TB Seagate External USB 3.0 backup Plus Hard Drive First I tested it on my external drive, after which I moved TSW to my internal drive and ran the test again, as indicated below. I timed it starting by launching (not resuming) TSW from the home screen and ending when the acknowledgement with the safety PSA came up. Results & Conclusion: External - 31.5 Secs Internal - 28.9 As you can see, there is a difference of only 2.6 seconds between load times on the external vs. the internal drives. Not too much of a difference to matter to me. I do not have an Xbox One X, so I cannot test it on that particular system to really compare loading times with the both hard disk drives These results are based on my own testing, so as famous last words, your mileage may vary
Just tested this on my One X. It has an internal 1tb 7200rpm HDD and matching the same rules you had, going from launching to the warning screen I got 20.4 seconds. So a larger difference this time.
Yeah I'm pretty sure the One S is 5400rpm, they went with the higher speed on the X as it's a more premium console. Would be interesting though if someone still had the large Xbox One Elite console as these had an SSD, which is even faster yet.
I find this interesting that internal is faster on your Xbox One S. Most portal 2.5inch USB3.0 HDD are 5400rpm as well and you aren't reading the OS off the external. Is your external drive a mains powered 3.5"?
No, I have it plugged into a USB 3.0 4 port hub, which is in turn powered by my One S (Plugged into one of the USB ports at the back of my One S).