For those experiencing time outs and disconnects while playing in tournament games at ACR, here is a workaround I discovered.
As soon as you realize that you are frozen, go to the main lobby, and click on the "Game Info - My Tournaments" dropdown at the top of the screen. You'll see your table(s) listed there - click on it, and then click "Go to tourney". You may need to click "Leave My Table" first for it to work, but if you do it fast enough, you'll get right back in before missing a beat.
This unfortunately does not work for Cash games, I'm still trying to figure out how to manage that one. However, I have not been disconnected from games in the past two days, so perhaps they're working on it.