Jackson vs. Yasson vs. something else?

[t1]

I understand that using JSON-B can have a significant hit on performance. IIUC, Yasson (the reference implementation of JSON-B) was not designed with speed in mind, so Jackson is orders of magnitudes faster, but not compatible to JSON-B (IIRC, there was an initiative to make it a JSON-B implementation, but I assume that project has vanished).

But if I'm not mistaken, both Yasson and Jackson use reflection to do the binding. This is not very Quarkus-ish, is it? I just stumbled over a project called dsl-json, which works as an annotation processor to create the actual binding code. And they claim to be magnitudes faster than Jackson! They even have some JSON-B compatibility, but I haven't evaluated how far that goes; nor for what version of JSON-B.

What do you all think of implementing a Quarkus extension that does this or something similar, so Quarkus could benefit from the compile-time optimisation with regards to CPU und memory usage also when (de)serializing from/to JSON?