you're not being given 6 ms out of nowhere to interrupt your opponent though. you should be aware of what mysteries he has played, what he will play, who he might be aiming for with the mystery and when he will try to take you unaware to cast it. you should have clicked your target and left your finger on the key. if you outplay and outpredict him, you will have more than enough time to react. it's not impossible lol

also, where's the fun in the game if you dont know how to take some losses lol