Since January 1, 2014, all $50/$100 NLH and PLO cash games on PokerStars are played via Zoom - the site's fast-paced way to play poker (if you fold a hand, you will be moved to another table with different players). According to PokerStars, the change was requested by its players and it's not a permanent change for now.
"PokerStars developed a special High Stakes Zoom product with an eye toward replacing all High Stakes games with Zoom, and it's now time to put it to a test," said Nick Williamson, Ring Game Manager for PokerStars, in an interview in December, 2013.
"Our players have told us that they want to focus on playing poker, rather than worrying about seating, lobby and software settings to get them the best seat at the table. This is in an effort to allow players to concentrate on actually playing poker while encouraging a healthy, competitive, non-predatory environment in our highest stakes games," said Williamson.