FrogReaver
The most respectful and polite poster ever
If a character is "breaking the game," I feel it's something that can be dealt with at the table. Have a power gamer abusing the system, throw extra hard enemies at him. Someone accidentally built a too weak character, it can be changed, if the player is feeling unhappy with his choices.
Sadly this behavior just reinforces the idea that he needs to powergame. It also has the rather detrimental side effect of making him believe the other players need to optimize to the same degree lest they die, which either pushes them to do the same or pushes him into frustration when he dies and can lay the blame at the other players feet.
It's soo close to being the 5 minute workday problem. Well I'll ramp up encounter difficulty to challenge my players. Okay they used a lot of resources and now they rest. Which essentially makes the game into rocket tag.