heh, maybe for Xbox a Fat G-buffer would smoke esram. But PS4 shouldn't be affected by something like that right? I think with Fox Engine the fact that we see 1080p/720p the fat g-buffer is a reasonable guess. But when I see PS4 dip in resolution I feel like the reason is elsewhere. They seem to be both affected, equally, so it's something they both share in common, i'm wondering if clock speed/not enough shaders is playing a factor here.
Why bother on theories, just say it is a demo of an unfinished game.