@Dave_Chad &
@Lord M:
Short answer:
No.
Long answer:
Noooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo...
I.E., not in the context of Libretro (where it's still purely software implementations), and will only be marginally better than Daedalusx64 from the PSP if you decide to do a hardware native emulator. Graphics emulation will be improved, yes, but the CPU certainly won't when most (if not all) emulators are made with more capable 1GHz+ smartphones in mind. And no, multi-threading won't solve everything.
And that's just speaking on N64; Dreamcast doesn't even
have a well-developed ARM-compatible emulator available. It would have to be developed from scratch, and that takes years at the rate new DC emu projects are going. But in the end, the CPU and GPU alike will be heavily bottle-necking said theoretical emulators' potential.
As this is already going off-topic,
please don't ask such questions again.
Also,
pretty sure Adrenaline's built-in savestate support works with PS1 games. If not, then some PSP plugins can handle the job just as well instead. Adrenaline is indeed the one-stop shop for legacy PlayStation stuff.