Noticeable lag/slowdown near end of game?

[f0rmula409]

Anyone else finding this game has very high CPU usage and slows down considerably after round 12 or so? I have a pretty strong gaming laptop but I've noticed a lot of delay in my moves and graphical slow down when playing at higher rounds. Not sure what is causing this.

Note, if this is best for the bug reporting please let me know. I wasn't sure.

[pwmeek]

I also notice some "stutter" in card movement as the game progresses, but I've only played a few games here. (It may be normal.)
[ In Chrome on a iMac ]