quality tests for local assistants

[vramghost]

Did a bit of testing and thought I'd post the result here.

After a few runs on Threadripper box, I ended up with decent performance, but the setup only really made sense once I adjusted around tail latency.

Nothing scientific here, just practical notes from a real setup.

[bytelab]

Did a small comparison this afternoon. On Threadripper box with MLX, I saw basically the same behavior. I expected the model choice to matter more than it did.