Thanks for the information, all. Letting you know we've seen this thread and are actively investigating. We'll let you know if we need any additional info.
Have just been playing 90 minutes on an old xbox one S (not the new series s).
No crash at all.
NA and EU, crimson cove public dungeon, and 2 quests for the dragonguard (ethruin in graathwood and the akaviri soldier grave in deshaan).
In addition crafted 20-30 furniture to fill up trader slots.
Maybe this feedback helps to encircle the issue, as it indicates that the old xbox versions run stable at first sight.
Unfortunately my main is stuck in a load screen crash loop after trying to zone into silent halls.