I've been playing on ACR lately and seen some Russian and Belarus guys multi-tabling like 16 100NL 6-max, and I haven't even looked to see if they are playing other limits. All this at like 4-5am their time. This seems super suspicious to me but I don't want to be naive about what is actually possible. Can this realistically be done? They never seem to time out or be otherwise distracted but they do occasionally sit out. They are also generally solid players with mixed strategy. It feels like there may be some sophisticated software just running all day and printing money but I don't know what people are actually capable of doing in the real world. Thoughts?