What? It's no cut scene, it's during character conversation, all in engine in realtime and exactly like during gameplay, except there's no DOF cuz there's nothing to use it for in the isometric view.
Yeah, lets compare this generic early past gen bloomfest with BG3 during gameplay and exploration:
Do I even need to post more? Cuz I've plenty more where these came from.
You still don't get it, do you? Not only does BG3 have exceptionally better character models, facial animation, extreme level of detail and objects on screen, it even looks better during gameplay and combat with much better enemy designs. You can even play the game in 3rd person with a gamepad like the Witcher 3.
I'd say you need to check your eyes, again.