Diminished returns in the Champion Point system?

Kammakazi

At how many points does it start? (Does each constellation have different values for this?)

Are you supposed to stop putting points once it starts giving you only 0.1% increase?

leepalmer95

Your mean't to stop putting points in something when you feel as if it's high enough, it's good practice to spread your points though for the first few hundred so you get the 25% increased resources, though people still put a lot of points into one because it benefits their build so much, such a dmg stars (mighty etc..) or bastion for shield sorc's.

Darlgon

When does it start? Did you notice that your first point into any line gives you more than the second?

For example under Tower, of the Thief Constellation:

1 point into Bash gives you 1%, the second gives you 1.6, third 2.2, fourth 2.6 % increase in dmg.
1 point into Magician gives you 1%, the second gives you 1.5, third 1.9, fourth 2.3 % spell cost reduction.

See the decrease? EVERY time you spend a CP, it is less effective on that skill.

And, you can stop putting points in, but you wont get the bonus for putting 120 points in and getting to Level 120 in the Tower, War Horse, which, btw,is meh to me, your horse does not burn stamina out of combat.