You can't stack named buffs, that histbark info is wrong or a huge bug. The best way to tell if something stacks is it's value. If one item adds 25% dr and another 35% those stack because they are separate buffs and not the same buff from 2 sources.

parkham wrote: »

OK, so if it's the same effect, but a different value, it will then stack?

Yes, basically.
It's actually simple. Major expedition stacks with minor expedition but you cant stack major or minor more than once. Any other increase to run speed (from cp/gear/racials) will stack on top of both.

Are there other things in the game that have stacking rules other than buffs and debuffs?

OK, more stuff from here:

https://forums.elderscrollsonline.com/en/discussion/157421/hist-bark-and-major-evasion

Hutuldur wrote: »

Did a bit of testing last night and it stacks, but there seems to be hard cap on dodge chance. Hist Bark + Major Evasion dodge change ended to 25-26% in all tests I made. Hist bark alone was 17-18%. Test runs were quite short, so I will double check tonight.

So using both is an improvement, but not big enough to be worth using unless you got too much stamina.

I don't know if caps are relevant to this particular discussion, but maybe they are? I have read there are caps on things like physical resistance etc.. I suppose everything in the game has a cap - I might start another thread about that if it's relevant to do so.

There are few caps in the game, one comes to mind and that is Damage Mitigation capped at 50%, which means you grow to 50% damage mitigation as you approach approx 32K in resistance, but going over 32K in resistance does not increase damage mitigation over 50%. I would assume Spell Resistance is the same here. But other than that, I have not heard of any.

Cost Reduction seems to be capped but its not really. For example, you have a spell that the tool tips says costs 620 points, down from say 1000 due to passives and gear that reduce skill cost. But then you apply 3 203 cost reduction glyphs to your jewelry, you would think that the spell cost should be 0, but its not, it is because how the cost reductions are applied.

As for testing, there is testing, then there is horsing around and reporting numbers. A true testor will state their testing conditions so they can be repeated and verified, as defined in the Scientific Method. Also, a testor will do what they can reasonably do to test one variable at time.

So, we don't know from this statement:

Did a bit of testing last night and it stacks, but there seems to be hard cap on dodge chance. Hist Bark + Major Evasion dodge change ended to 25-26% in all tests I made. Hist bark alone was 17-18%. Test runs were quite short, so I will double check tonight.

The testing conditions are not specified, how is the person reporting the dodge chance? what gear are they wearing? what passives or buffs are in place?

Also, and this is the most important thing to understand, Dodge Chance is a Chance to Dodge, in other words, RNG is a factor here. For example, you can have 99% Dodge Chance and not dodge any attacks in a fight. Sure, it's unlikely that you would not dodge something, but its still all down to RNG.

One a few more questions and I think I have it:

Let's say two people use Aggressive Warhorn. What effect will it have on the enemy?

Will the Major Force buff stack because different people used the buff?

Let's say an affected player has 10000 in Magicka/Health/Stamina. Will the Max Magicka, Health, and Stamina increases stack? So that now the affected player would have ((1000*.1.1)*(1.1)) = 12100?

Thanks!