I'm about 15 hours in to a character and I've come across a weird bug related to my maximum Magicka, probably as a result of interactions between some mods I'm running. I'm really not sure how long it's been going on for because it's really just become an issue now I'm starting to cast High Magicka cost spells. The mods I'm running that affect spells/magicka are:

- BTB Character

- BTB Spells EMS MGSO Patch

- GCD Lean v203 (Plugin called "GCDWhittleUb.esp)

- Aragon's Cast Reduce v3.0

The BTB Character module makes changes to Altmers' maximum Magicka bonus, increasing it by +*2.0. The BTB Spells plugin changes lots of the default spells in the game to be more effective as well as the base costs of the spell effects themselves. GCD Lean alters Magicka so that it regenerates and also how your Max Magicka is generated (I think). Aragon's Cast Reduce gives you some of your Magicka back when casting spells proportionate to your skill level in the governing spell school.

Now, the problem I'm having is that every time I cast a spell it appears that the game is recalculating my Maximum Magicka to a lower value and then raising it back up again to what it's normally at. The practical effect of this is that a spell that is supposed to cost 60 Magicka to cast (Potentially lessened by Aragon's Cast Reduction by 10%, 20%, 30% etc ...) ends up costing about 90 Magicka once my Max Magicka level is recalculated.

Has anyone experienced this before or have any ideas about how to fix this?

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Edit: After further testing it appears that the game is recalculating my maximum magicka every single time I go in to my inventory. I turned off Aragon's Cast Reduce Mod, BTB Spells and BTB Character and I'm still getting the same problem so unless the effects of these mods can somehow remain in the game after turned off the culprit here is probably Galsiah's Character Development. Interestingly, after turning off the three aforementioned mods my Character's Maximum Magicka is still the same as if it were turned off even though I no longer have the racial bonus to max magicka listed in my char's active effects.

2nd Edit: Okay, after even more testing I can pinpoint this problem to where it started happening - about twenty saves ago – so something must have triggered it. After going back even further it appears that Aragon's Cast Reduce was never working ugh ...