@stefano you picked my curiosity, not because of the perf gain but netbsd lobbyism :)
I tried to boot the iso and img on qemu and it failed. anyway i prefer baremetal for OS testing, dunno why and fortunately, I have saved an Asus Core2Duo from trash which will be the 'host' for the experiment.
I would have resisted or waited 25y to test NetBSD. 😆