Who doesn't love rolling a critical in combat? There are plenty of ways to run them, but I hate the way my DM does so. To me, a critical hit should be an incredible shot, an arrow to the knee, a rapier to the eye, etc. My DM does a 2x multiplier (Simple and homebrew) to your regular hit. Ex. Longbow- 1d8. Rolls 3, damage after multiplier = 6. I feel like this is extremely cheap. if you roll a 1 your damage = 2. This to me does not seem 'critical'.
My preferred crit method is max + your die roll. Ex. Longbow- 1d8. Rolls 3, plus the max die roll of 8 = 11. Guaranteed to be critical.
My DM does not like this and refuses to incorporate it into gameplay.
I want to compromise with him. We always run homebrew rules and I haven't been successful in finding the official crit rules for 5e. What are the official (non-variant) rules for critical damage?
(Please note that although I am not 'new' to D&D, as I played 2e for years, I do not currently have a 5e Handbook, and therefore cannot just flip to page _____.)