Collectible Card Game Headquarters

Every time i join a game or make my own game when i choose yes or no to the mulligan down to 6 cards it freezes the game, i usually wait about 2 minutes to make sure because i hate screwing over the other people who are trying to play with me but in the end i have to just close the program and try again but it hasn't work like 5 times in a row now and i feel like people are getting annoyed with trying to join my games.