My thought exactly. Just run the whole thing at a very low speed. One clock tick every hundred years so to speak. This will make the whole uploaded species live

My thought exactly. Just run the whole thing at a very low speed. One clock tick every hundred years so to speak. This will make the whole uploaded species live in a slower lane, but subjectively for them the rest of the universe will seem to have sped up. Of course this has the disadvantage of them not being able to communicate with nervous short-loved critters like us, which also neatly explains why we don't hear or see them.