You're wrong. The ESRAM may be a bottleneck when processing textures and other graphic aspects of the game directly on the GPU, but when it comes to computation (physics, AI...) the ESRAM is way more faster than DDR5. Tiled streaming is about computation and the cloud, and the ESRAM is something that helps a lot there.
Hey, but let me say something. The PS4 is more powerful than the Xbox One. That's a fact, power can't be made with anything. But Xbox One is a mor...
Tiled Streaming is the reason behind Xbox One's ESRAM. So... at least the Xbox One is capable of using this tech. And the PS4 should be capable too, but idk.