So i was messing about and doing some testing with psychic vampire and spells such as calm and courage, and while Dominate seems to be working as intended (25% strength and time), psychic vampire seems to be having no effect at all on dominate(by increasing the values to 50% I assume on an affected target). For calm, casting on an NPC doesn't increase the level they need to be to resist it, nor does it increase the time the spell lasts for, past what dominate already provides, and for courage, it doesn't increase the health or stamina they get, nor increase the time it lasts either.
The mod has been absolutely perfect up until this point and majorly fun to play with, so while small i hope maybe i'm just misunderstanding something about the perk itself.