Sorry, I meant to add that information to the release notes. If you have the default setting of Medium for matabalism then it gives 1 XP about every 7.5 hours of total time (i.e. it should add up all the individual times you are active) so you are nearly there! The idea is that I will be adding lots more ways to earn XP soon
1 XP from being active
High ~ 4.5 hours
Medium ~ 7.5 hours
Low ~ 12 hours
by Buzzy Cnayl
The following user(s) said Thank You: April McKenna