Demonflame Damage too High? (Or regen too low?)

Bug Report ID: #643065992

After testing many combinations of Infernalist Demon Form with varying life totals and regen amounts/methodologies, the math just doesn't add up...

Demon Form states "You gain Demonflame every second you remain in demon form... Lose 0.5% of Life per second per Demonflame". As such, one should easily be able to calculate life degeneration as 0.005 * Max Life * Time. The character stat sheet already shows life regeneration/recovery amount, so we can simply subtract the two value to determine when the character should start losing life.

The following tests all show faulty results, assuming the above calculation for Demonflame are correct:

Scenario 1 - Rare Helm, Flat Regen, No Eldritch Battery
Max Life = 68
Total Life Recovery Per Sec = 17.3
Actual Max Stacks Until Degen = 19
Theoretical Max Stacks Until Degen = 50

Scenario 2 - Mask of the Stitched Demon, No Eldritch Battery
Max Life = 68
Total Life Recovery Per Sec = 41.8
Actual Max Stacks Until Degen = 44
***Life stops at 67 (Max - 1) at 31 stacks, but not yet full degen
Theoretical Max Stacks Until Degen = 123

Scenario 3 - The Black Doubt, Yes Eldritch Battery, Reduced Max Life
Max Life = 68
Total Life Recovery Per Sec = min(Mana Recovery Per Sec = 106.6, 10% Max Mana = 146.8) = 106.6
Actual Max Stacks Until Degen = 108
**Life Stops at 67 (Max - 1) at 31 stacks, but not yet full degen; Life is not full, so Mana completely drains due to The Black Doubt
Theoretical Max Stacks Until Degen (Mana Degen first) = 314

Scenario 4 - The Black Doubt, Yes Eldritch Batter, No Life Reduction
Max Life = 594
Total Life Recovery Per Sec = min(Mana Recovery Per Sec = 104.6, 10% Max Mana = 144) = 104.6
Actual Max Stacks Until Degen = 47
**Life Stops at 593 (Max - 1) at 11 stacks, but not yet full degen; Life is not full, so Mana completely drains due to The Black Doubt
Theoretical Max Stacks Until Degen (Mana Degen first) = 35

Character Sheet + Inventory - https://imgur.com/a/SNyjNls
Skill Tree - https://imgur.com/a/9IzK7Q6