u/BeforeSunset11

By keeping your toxicity high using potions, Delayed Recovery (Alchemy Skill): At level 3 prevents the Blizzard timer from ever reaching zero. This means as long as you have 3 Adrenaline Points, you have infinite stamina for the entire fight

step 1: Drink several potions (Note: Toxicity from Decoctions (Mutagens) doesn't count ) to push your toxicity level above the required threshold (70% or 55% depending on your skill level).

Step 2: Consume the Superior Blizzard potion.

Step 3: Build up 3 Adrenaline Points in combat. Once you hit 3 points, the "Infinite Stamina" effect kicks in.