[proslaviy]

It's nothing to do with it being more taxing. It's to do with the fact that video editing is a real-time task. If you put your Mac to one side and work somewhere else then you are not doing your job as a video editor, you are doing another job.

Our guys generally have Final Cut Pro open all day and work on anything between 2 and 10 video streams simultaneously as well as audio tracks.

Are you thinking of 3D rendering? It's very common to leave a final render going and do something else.

No I'm talking about working in an environment where resources are scarce. Where people don't all have flashy Macs and that's just what you do, you go back to another machine and do some print work until your done. I'm talking about final output here as far as setting a machine aside but if you can't wait a minute or two for your preview of the piece you are currently working on you are spoiled.