... in a purely digital environment.
Think about building a house. Digging the foundation, pouring cement, building block walls, framing, sheathing, weatherproofing, insulating, wiring in electric, plumbing, drywall and plastering, painting, and decorating it. You can imagine each step in exquisite detail over the course of an hour or an afternoon.
Now go out and build it. It will take you months or years to carry out the actions you can imagine and plan in an hour.
A digital being may be able to run on expansive overclocked hardware to have an experience hundreds of times faster than yours, but it won't get to be the flash in the real world. Mechanize, sure, build robot swarms, sure (although then it gets to multitask to process hundreds of input streams and dilute its CPU power), but it will be coupled to an existence not much faster than ours.
If it wants to interact with the real world; a (true) AI may be able to live a lifetime in an afternoon, in a purely digital world, but once it is marooned in realtime it is going to be subject to a very similar time stream as ours.