New player here, I'm looking at spending fsp on the "+25 xp gain" upgrade, but I'm not sure its worth it.
If I understand correctly 25 xp is the base, and every additional 25 levels you get 1 extra xp regen per hour per upgrade.
So at lv 50, you get 26xp, at lv 75 you get 27xp, at lv 100 you get 28xp.
Is that correct? If so I don't think its worth it.