Why is vibe.d still performing bad in benchmarks?

[bauss]

As seen in: 
https://www.techempower.com/benchmarks/#section=data-r18

vibe.d once again ranks terrible on the list.

With the power of D etc. it should be able to perform at the same 
level as the top frameworks but it just isn't so what are the 
reasons, where can it be improved and what areas do we as 
community need to look into and improve upon?