Improved performance isn't necessarily a good thing, when it comes to these sorts of hash functions. The faster a hash function, the easier it is to brute-force.
Funny. BLAKE2 (being faster than MD5 yet more secure) seems to disprove that absolute (and utterly incorrect) correlation.
The takeaway message for us lowly non-security types was pretty simple, yet none of us got it: I'll be pretty happy when I can replace the md5sum command line tool with something faster that I can have a reasonable amount of confidence in.