Stamina Reduction tests

Can anyone help me with this, so far these are my results.

Food = Barbaros Ratatouille

Test is to run in a straight line until you run out of stamina, numbers below are 2-4 test runs of each condition at an account with 146 stamina. Numbers below are the amount of seconds it took to run out. (There's small differences cause well im sleepy and tapping a timer)

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Food + Razor + 2 wind 12.9 - 13.2 - 13.5

Food + Razor 10.5 - 10.5 - 10.4

Only Food 10.5 - 10.4 - 10.2 - 10.6

Food + 2 wind 10.2 - 10.4 - 10.7 - 10.2

Food + Razor + Kaeya 13.5 - 14.0 - 14.1 - 13.9

Food + 2 wind + Razor + Kaeya 19.5 - 19.6 -19.8

Tests without food

Kaeya + 2 wind 7.8 - 7.9 - 7.8

Razor + 2 wind 7.9 - 7.8

Razor + Kaeya + 2 wind 9.2 - 9.3 - 9.3

Razor + Kaeya 8.0 - 7.9

Razor 7.7 - 8.0 - 7.8

Kaeya 7.7 - 7.8

2 wind 7.5 - 8.0 - 7.7

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Results

For some reason 2 passives (Kaeya and Razor) don't seem to stack, but when you add 2 wind and stamina reduction food, suddenly they seem to stack. It's like nearing morning so I might just be dying in the head, but those are my results, I'll try again after some sleep but if some people could test and see if they get similar results that would be helpful. Thank you!

I'm starting to test stuff because there seems to be a lot of conflicting opinions on mechanics on the game and this is what I wanted to start with.

Bonus: for people who spam dash/evade, it does get affected too it seems by the reduction passives.