Not going to lie, I assumed the primal caching service was an optional/nice-to-have that only sped things up. But just tested disabling it and it seemed to basically completely disabled the app 😕
TIL
nostr:note1apxc6nq35wn6lx59gewzgvtrwcv20u9njz38racuxw4mtm4vfnksnj92l3