Not really. When I do a long haul flight, I set the throttles at a setting that holds a speed of M0.80 - M0.84, depending on how economical I want the flight to be. Doing that, I can make quick trips to the kitchen and toilet, but not for too long, especially when using real weather. I try not to be away for more than 5 minutes, just in case something goes wrong. ;)

Mark