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Fortification slow power use on squadmates
https://masseffect.fandom.com/wiki/Fortification#Mass_Effect_3 According to this link, Fortification/Barrier/Defense Matrix reduces power recharge bonus, not the overall time of powers. If that is t...
As you rightly said, this is not a penalty to the overall power recharge speed but to to the power recharge speed bonus of the Weapons loadout screen.
Therefore it will not influence the squdmates power recharge speed
