Quite frankly, I'm finding metal that does nothing but go fast, fast, fast too fatiguing to listen through a whole album nowadays and an easy way to desensitize a listener and could burn out the musicians. I rather hear metal that's more slow and broody and doomy and I think Gojira did a solid job of that in their latest album, even if that doomy, gloomy, stuff is not for me. They weren't spamming notes endlessly.
I mean Metallica certainly is more than capable enough to slow things down, make their key fast moments of songs look more meaningful, as oppose to "What just happened? Everything I listened to was a big blur." and Death Magnetic certainly had those moments where them slowing down at the right moment made the faster parts mean a lot more (to me, this happened in Suicide and Redemption and I liked that instrumental).
So hopefully, Metallica still knows how to time the right moments to go fast or slow, or else, I might just have a hard time picking songs from the album that I enjoy listening to, since it could be just all a blur like when I heard Hardwired.