yielding too quickly misses outputs

[Clement-Lelievre]

Hi,

I ran into a case whereby I was certain my code was correct, my predict() code yields images, and yet... only the first one got outputted.
After investigation I realized that adding a small delay between two yield statements worked, so I guess under the hood the API somehow gets flooded.

Could you add a warning in that case please?

Thanks,

FWIW

cog==0.9.20
replicate==0.32.1

cc @mattt