"Adrenaline increases the frequency and strength of heart contractions, redistributes blood flow in the body. The blood flow to the muscles increases, they receive more oxygen and nutrients. So, Geralt's third sword hides in the sheath Geralt should be more energetic during the fight?" - that's the kind of thought that led to the creation of this mod.

Stamina regeneration and armor type

It's no secret that stamina regeneration in combat increases or decreases depending on the properties of the equipped armor. Namely, what type of armor is it: heavy, medium or light. In the vanilla game, a bonus or penalty is added to the base regeneration value (which takes into account the effect of potions, decoctions, etc.). For a full set of heavy armor, 25% of regeneration is taken away; for a full set of light armor 25% is added. To avoid confusion in terms, both the positive and negative changes in the stamina regen value due to armor will be referred to simply as a bonus. The final bonus value is obviously the sum of the base bonuses of the equipment items: -10%/+10% for armor (shell), -2%/+2% for gloves, -10%/+10% for pants and -3%/+3% for boots. The elements of medium armor, as well as the absence of armor elements, gives a 0% bonus.

What does the mod do

Details:
Firstly, the base bonus values for each armor element have been reduced by 40%. Thus, the bonus for a full set of heavy or light armor has become smaller (i.e. closer to 0%).
Secondly, the bonus calculation system has been changed. Now the bonus value that depends on the armor element type and the amount of adrenaline will be added to the initial value.
The initial bonus value is always -30%. In other words, stamina regeneration in combat is 0.7 of its vanilla game value when there is no adrenaline. As adrenaline increases, +0.25*k*x % will be added to this value. The maximum bonus value will come at two adrenalin points and will be +k*x %. The calculation is carried out for each armor element separately. The x parameter is the base bonus value of a particular armor element (is equal to 60% of the modulus of the vanilla game value), and the k parameter is the coefficient responsible for the armor type . k is 1 for heavy armor, 2 for medium armor, 3 for light armor. To match the mod's idea that the heavier the armor, the lower the stamina regeneration, in the case of no armor element, k is 4. In addition, there are "clothes" in the game. For example, this is a shirt, a courtiers doublet and the like. In the vanilla game, these items are listed as light armor, however they do not increace stamina regeneration. For such items, the mod also sets k to 3.

Images:
Images 2-5 show how the final bonus values for different type of full armor set will change depending on the adrenalin points. Red lines correspond to mod values, black lines correspond to vanilla values. These figures are quite enough to understand how the calculations are carried out, so I did not make such figures for each element of the armor. If you put on armor elements of different types, obviously, the final value of the bonus will be some kind of intermediate.
Image 1 shows what stamina regeneration will be with different amounts of adrenaline without armor. The value that is displayed in the character stat menu is rounded to an integer, so it displays 9/s instead of 8.5/s when adrenaline point is 0.5.

Notes:
1. Enchanting (Heft, Balance, Levity) has been changed in a similar way. In the case of no armor, the particular element will not be affected by the enchantment effect (the k parameter remain equal to 4).
2. Maximum possible bonuses to stamina regeneration in combat for full sets (0% = regeneration base value, see above): -15% for heavy armor, 0% for
medium armor, +15% for light armor, +30% for no armor.
3. For obvious reasons, the difference in stamina regen values with different amounts of adrenaline will be more noticeable when the base regeneration value in combat is higher.

Additional features

1. Doubled adrenaline generation during heavy attacks.
2. For some reason, armor of a Thousand Flowers and pants of Netflix armor give a bonus to stamina regen despite being medium armor. I think it doesn't even fit into the vanilla concept of the armor stamina regen bonus, which is why those bonuses have been removed.
3. If you want to disable stamina regeneration dependency on adrenaline, found "function CombatStaminaArmorRegenChange()" in playerWitcher.ws and change the line "return true;" to "return false;". The value of the armor regeneration bonus will remain reduced by 40% of the vanilla value.

Nothing special. Unpack "modArmorStaminaRegenChange" into /mods folder. Don't forget to use Script Merger if necessary.
You can delete mod at any time, it does not affect saves.

File information and other

The 0.2a version runs on game version 4.04.
Mod edits files listed below.