Yes, because SHA256RNDS2 aid the implementation of the update function of SHA256. We should invoke it multiple times on the message blocks, it performs two rounds out of the 64 SHA256 rounds.
That'd make SHA256RNDS2 even faster because of the throughput numbers.
I'm curious, what's the faster algorithm for hashing you use? I don't want to waste time on intrinsics and inflict complexity on my colleagues if there are alternatives I can use!