It is known by now that the amount of cp exp you need to get a point is 400k, well when 1.6 came on the pts it could be seen that the amount of exp you get for a cp was close to the normal VR exp gain. it was possible to gain cp points doing certain things or spending about 30 mins to few hours to get a single point.However, when 1.6.2 came something happened to the CP exp gain and now killing adds or doing dungeons doesn't give the same amount of CP it did before. For example let's say before you could get 40-50k exp within a certain amount of time, now doing the same thing you will get about 5-10k this will make gaining CP points harder for many people who; let's say have a difficult time forming a group to do trials or dsa. I have done some testing and noticed that doing DSA gives a medium amount of cp exp gain per round but still I don't think it was the same amount as in the beginning of pts.
I am not really sure if this is intended to be done as a way to stop champion system from being a grinding system or it is a bug because correct if I am wrong but I haven't read anything in the patch notes mentioning the reduction of CP exp. the problem is now i can't test anything since my main has 3600 CP and when I tried gaining CP exp I had 70 Cp, so if anyone can confirm that the gain of CP point became harder or slower say so haha.