During our last session I was very close to strangling our DM.
He kept saying don't use game terms stay in character. So we came to a room I told the rest of the party to move away from the door that I had an idea. They did and I took some cover from the frame and cast a fireball into the room. I did this all in character. We did not have a battlemat drawn out. The fireball comes billowing out of the room and he ruled that everyone was in range and had to make saves.
This is something that I often find very frustrating with the game. It is hard to stay in character when you have to stop and say okay everyone move sixty feet down the hall count it out on the grid.
I think the battlemat is fine for combat so you can see where you are in realtion to everyone else. But is it really necessary to be that rules accurate every second in the game? Would it break the game balence to just say we move away and asume that they have seen enough fireballs from this character to know to get out of range?
I can understand if the fireball is coming from an enemy mage then it is important to know where everyone is.
So how to other DMs handle things like this?

This is something that I often find very frustrating with the game. It is hard to stay in character when you have to stop and say okay everyone move sixty feet down the hall count it out on the grid.
I think the battlemat is fine for combat so you can see where you are in realtion to everyone else. But is it really necessary to be that rules accurate every second in the game? Would it break the game balence to just say we move away and asume that they have seen enough fireballs from this character to know to get out of range?
I can understand if the fireball is coming from an enemy mage then it is important to know where everyone is.
So how to other DMs handle things like this?