Penetration seems extremely buggy after 1.08.9

[GodWentAFK]

After the most recent update, my shells are struggling to get full penetrations on armor they can penetrate twice over. The math simply does not check out this patch. Cruisers with 23" of effective armor are blocking 11" capped and 14.5" standard HE with well over 38" of penetration at the engagement distances. In that scenario, which played out in multiple different campaign battles, my hits have fully penetrated armor maybe 5% of the time, with the rest being split between partial penetrations and complete blocks. Cruiser AP is being completely blocked by destroyes sometimes, but almost every hit to the main belt or deck is just a partial pen, despite being able to penetrate nearly 10x that amount of armor.

This is the first time the penetration model has felt this buggy in the 200+ hours I've played of the game. Something is seriously wrong.