Is anyone else having problems responding to declare attackers/blockers or countering spells? I often find myself furiously mashing X, but the game won't give me priority (or will give it to me too late).
It won't stop like it does on MtGO. You're going to have to hit the X button at the last possible second. It's messed up I know. Pay attention to your opponent's
main phase bar and hit it at the last second possible is my advice. Hope this helps... this time.