Bugged Perks, Tooltips and damage scaling

So I have been doing a bit of testing with damage and such in TOW 2.

So far this is what I've got.

I would LOVE if anyone had any similar info on other talents or interactions

Space Ranger: Tooltip is wrong. This talent gives +5% damage per point in speech. not just +2.5% as listed....NICE!

Tinkerer: Actual damage seems to track with its tooltip, but the damage/dps doesn't show on the sheet for the weapon. Annoying, but fine.

Various sources of +% damage (Crabble Ranger/Space Ranger/Tinkerer/Guns skill) all seem to add together additively rather than multiplicatively. Making certain perks a lot less enticing if you are already levelling up guns.

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For those who need a reminder on additive vs multiplicative damage bonus interactions:

Consider Guns 20 for +200% damage and a weapon with base damage 100

No perks would mean you deal 300 damage (ignoring armor and resistances)

+10% damage perk with additive scaling: Means you do 310 damage (100+210%)
+10% damage perk with multiplicative scaling: Means you do 330 damage (300 damage+10%)

I have not looked at how the damage bonuses from weakspots, criticals and sneak attacks work. But I hope that at least some of them work multiplicatively with pure +damage.
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Couldn't find another thread for these sorts of findings, so hopefully this will prompt some of the testers out there to share their findings here :-)