how does rounding work in this game?! (armor sloping)

[redimposteramongus]

context:
planning my second run. i want to use reach the minimum AP cost per punch while using metal armor + 3x serrated blades because i want to run a funny [taste for blood] + [vile weaponry] setup. so with [nimble] and [armor sloping] i can get super steel (45 -> 29) armor and 3x s.blades (3*3) to 38 total armor penalty, but with [nimble] that is still (38 - 15 = 23) over the [lightning punches] threshold of 20, so i want to hit the threshold via spec points. here comes the big question.

1st method: 3x spec into [lightning punches] (very straightforward)
2nd method: 2x spec into [armor sloping] 1x spec into [lightning punches] (subject to the whims of arbitrary rounding, but preferable since i get to squeeze move points out with [fancy footwork])

[armor sloping] 0x spec: 45 * 0.65 = 29.25, wiki says the final value the game uses for armor penalty is 29, cool. this also gives me some insight to how underrail reaches this number via rounding.
roof -> *impossible*
floor -> possible
nearest number -> possible

[armor sloping] 2x spec: 45 * 0.61 = 27.45!!!!!! does this go to 28 or 27?!
floor -> goes to 27, this is what i want
nearest number 1st method -> 27.45 first rounds to 27.5, then rounds to 28, this makes taking 2x [armor sloping] spec bad (this is how rounding is taught in schools where i live)
nearest number 2nd method -> 27.45 rounds to 27, this is also fine by me (this is how a computer does rounding... i think)

this game is so incredibly inconsistent with rounding (ex. ap costs are roofed) it kind of makes me nervous to build on a razor thin margin like this LOL someone please help me out. its so funny that if it was 27.44 or less i wouldnt have this headache. or if i can simply put 3x spec into armor sloping

[Albert Altmann]

2x specced Armour Slopping will yield 27%. I played a similar build but with spikes so I would know.

On a side note, putting three serrated blades on a suit of metal armour won't provide three separate chances to apply a bleeding wound. The number of serrated blades only increases bleeding damage, not the chance to apply more bleeding wounds per hit, so if the idea behind the build is to inflict as many bleeding wounds as possible triple serrated blades will be mostly pointless.

[redimposteramongus]

2x specced Armour Slopping will yield 27%. I played a similar build but with spikes so I would know.

On a side note, putting three serrated blades on a suit of metal armour won't provide three separate chances to apply a bleeding wound. The number of serrated blades only increases bleeding damage, not the chance to apply more bleeding wounds per hit, so if the idea behind the build is to inflict as many bleeding wounds as possible triple serrated blades will be mostly pointless.

thank you thank you thank you.

>no 3 separate bleed procs, just makes the bleed stronger
does it at least bump up the base proc rate then? i might reconsider my build if it doesnt 

[Albert Altmann]

I regret to inform you that even the chance remains unchanged.

[redimposteramongus]

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO