So I have played a few hours on the Series S now and about 2 on the ROG, first impressions are really good, it does feel quite fallout esque to me just without the VATS, I think I have dived right into sidequests, the main story I had not interest in almost immediately lol but the side content seem's quite good and fun.
The fact it's not open does not bother me, it feels a bit Mass effect in that regard but it never bothered me then and won't bother me now. I love the setting, I'm just in the first city you come to at the moment but still see me being there for hours yet as I seem to have about 10-12 side quests already and I'm quite happy pottering about and exploring Atlantis.
The xbox is handling it pretty well so far as I can see and the lack of the extra power from the Series X does not bother me. The combat's pretty fluid for a Bethesda game, it's certainly more refined and improved over previous titles.
The ROG also handles it pretty well, I had a couple of slowdowns but I think it was updating in the background, on the whole though it handles the game well.
I think the only thing I have not liked so far is the film grain, it seems a bit over the top and I have ended up turning it off completely.