I like play shatter ice together with maelstrom, best thing to knock out archwalker. in 1 of 5-10 games i have also these dammed freezes, and my framerate drops to 0.05 for about 2 minutes the game resume an gametime is accerlated to bring me back to synctime. Often i loose my hole army in this situation. There was a player who dont wanted to play with me, if i have shatter ice in deck, but I experienced in this situation, that other players can repeat there run without having same freeze like me and can finish the map.