It is statically impossible for the frequency of 7s to roll as common as they have when a player goes over 9 cards for the first time in 1v1. It should be 1 in 6 or less than 17% of the time. However, in over a 1,000 games it happened about 50%. That is statistically significant for that sample size. My only conclusion is you have altered the random dice during those rolls to make the game more interesting. Can you confirm the dice are not truly random during those rolls?