Loopback/rest stringifies the responce which takes time and hangs the app

Describe the bug

I have a loopback 4 application where I have API which returns large data 500000 records to explain the problem I have added the jaeger trace

if you see 1) is my API which has responded in 7-8 sec but the complete API took 12-13 sec
I want to know what happens in those remaining 5-6 sec?

I debugged the API and found out that the control goes to loopback/rest where it is stringifying the response that too using JSON.stringify() and not asyncrously

what happens is that during this time all other requests goes pending in my case liveliness check goes pending and as per my configuration if liveliness failed the container restarts .
how to fix this problem ?

Logs

No response

Additional information

Can we do a faster stringify?
or maybe make this asynchronous? I am ready to contribute

Reproduction

.

Comienza en la ruta de respuesta de loopback/rest descrita en el issue y reprodúcela con una API que devuelva 500,000 registros. Mide el tiempo empleado en JSON.stringify y si las comprobaciones de actividad siguen pendientes durante la serialización. Se considera terminado cuando se hayan abordado el retraso de respuesta informado y el comportamiento de bloqueo de las solicitudes, y el resultado se haya verificado con el mismo escenario de respuesta grande.