So I am at the point now where I am comfortable with DRK tanking and want to max out DPS when possible. I have started turning off grit when I have stable hate in bosses and am using cooldowns to cover the lack of -DMG. Mostly been doing this in dungeons, and trials with friends.

In general when grit is off do people pop cooldowns automatically to have some buffer or do you wait for mechanics where you need extra -dmg? Ive had to turn grit back on mid fight in DF groups because healer was not keeping up etc. is this to be expected? I.E use grit like an expensive cooldown?