If you have a Vet level character in the AD, there is a great grinding spot outside Riften just slightly north in The Rift. Tons of Sabre Tigers that respawn quickly. Solo, I can get a champion point in about 40 minutes. If you are with one other person with an AOE skill, you both can pull in multiple groups at once and get a champion point in about 10-15 minutes. I do that, then it’s back to questing, PvP, crafting, etc.