Number of players?

I have implemented a Liars Dice module, and played it with 4 people with no problem.
Later on I tried with 6 players and all h*ck broke loose. state sync problems (one person is seeing different number of counters as others etc.)

Is there a practical limit to number of people in the same game session?

(I was using a wave file for dice rolling sounds. I clicked “send that sound” option which I later realized might be generating a lot of extra traffic. I have turned that off now but have not tested it to see if it’s better)…