Multiple Guras exist and they take turns to stream, that's how a Gura who was born from a womb and a Gura who was born from an egg can coexist without contradicting each other. After each stream the Guras go in a lethargy that lasts a week or even a month, depending on the activity. The pauses "she" takes are because there are no Guras available and they're all asleep.
This also explains: wide Gura, Gura's voice being different each stream for some anons, Gura's being bad at games and suddenly being good at them the stream after and, of course, Gura's lore differences.
Each Gura is specialized into something. I bet there's a Gura who sings karaokes and nothing else, a Gura who only plays rhythm games, a Gura who's horny and shlicks off other Guras in their sleep all day long...