I have been exclusively been playing the game using Puffin on Android devices since the release of XXL, PC can't handle the update. What it can handle is highly dependent on screen size. On my Samsung Ace smartphone you can struggle to even send explorers out. On the wife's 7" hudl gameplay was so problem free that I treated myself to a new Alba 10" for Xmas, again no issues to report plus the wife is no longer demanding her turn on her tablet mid fairy tale