It has come to my attention recently that linux machines store info about their cryptographic capabilities in /proc/crypto.

A baremetal machine I have shows sha256_ssse3 in the sha256 module parameter, which apparently means that some CPU instructions directly computes hashes... Turns out, a VM running on that same machine displays kernel. Seems that might slow things significantly cause now, some software is doing that same task instead.

Can someone attest that those flags impact Bitcoin Core's performance directly?