The new exp gain effect will take longer for players to reach high levels. For level 1 exp gain itself, takes 1 hour 33 minutes to reach level 30. And 23 minutes using level 4 exp gain.
The cost has been changed from exp only to vault or emerald only.
Power consumption has been increased
You can customize these changes to nerf or buff the effect by editing the effect config inside effects.yml
These changes don't automatically apply, you might need to generate another effects.yml and re-apply it yourself.