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However, I will take roughly 30 seconds longer to finish a ship with 38mm of armor or more. I can finish a BB with 32mm armor roughly 30 seconds faster with IFHE. Without doubt you will now perform better against all ships without 32-37mm of armor without IFHE, while IFHE still gives you more dpm on targets with 32-37mm.
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It turns the decision mostly into a zero sum game. Effectively WG has released a nerf on the so widely cursed on HE-spam. Wargaming wants to incentivize the community to skip IFHE. The carrot is the improved penetration without IFHE. The stick is cutting fire chance in half with IFHE. The IFHE-rework came with stick and carrot. I did some math and testing and still I cannot give an answer.
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Little White Mouse recommends using IFHE on 152mm guns. I think nobody right now can give you an absolute and final answer whether to spec into IFHE on 152mm guns.
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