RayTracing on/off on shipped game?

I just resume this old post hopefully someone smarter than me can help:
because I had some performance issue, as i posted in this thread
I noticed a “only Software tracing shipping build” performance a lot better than a hybrid shipping “HWRT/SWRT build” when it’s running in software tracing like the single option build( I disabled the Hardware raytracing by command line. )
I think just command line option to disable HWRT is not enough but I don’t know what i missed and documentation is not clear