As the title suggests, we're going to be reducing the amount of damage monsters do in Inferno whenever Monster Power is enabled. Before I detail what's changing, though, let me first explain why we're making some adjustments.

When we originally designed and implemented the bonus values for monster damage in Inferno, we were unaware that a bug was causing monster abilities (i.e. Rare and Champion affixes) to not scale correctly with each Monster Power level. While this bug was caught during testing and did not make it into the game, the result of it being fixed meant that monster damage -- specifically damage done by monster abilities -- was ultimately higher at MP1 through MP10 than we intended it to be when 1.0.5 released.

So, to bring monster damage back in line with our original goals for the system, we're implementing a hotfix that will reduce the scaling bonus to monster damage in Inferno difficulty by approximately 25% for all Monster Power levels.

Here are the new damage values that will be hotfixed in for each MP setting:

MP1: 109.60% (down from 114%)
MP2: 120.12% (down from 130%)
MP3: 131.65% (down from 148%)
MP4: 144.29% (down from 169%)
MP5: 158.14% (down from 193%)
MP6: 173.32% (down from 220%)
MP7: 189.96% (down from 250%)
MP8: 208.20% (down from 285%)
MP9: 228.18% (down from 325%)
MP10: 250.09% (down from 371%)

Please note that these changes will only apply to monster damage in Inferno difficulty. Monsters in Normal, Nightmare, and Hell will be unaffected and continue to use their current values.

This hotfix is currently scheduled to be released tomorrow morning during normal Tuesday maintenance in the Americas, which means the new bonus damage values in Inferno will take affect once the game servers come back online.

My comment is, the main problem is not the damage.
It is the HP of the monsters.
Imagine 4 illusionist elites that cast shield on each other. 

High monster damage could be the secondary problem though.

My comment is, the main problem is not the damage.
It is the HP of the monsters.
Imagine 4 illusionist elites that cast shield on each other. 

High monster damage could be the secondary problem though.

Damage reduction is the great 1st step for DH.. Then I can move from mp4-mp6..

Yes, reduce damage reduction will help players to progress in MP4-MP8.

If you look at MP10, it is not quite possible to farm.
Just give you a scenario, 4 illusionist elites will spawn into 16 elites.
And they cast shield on each other.
By the time you kill all the clones, they already have new clones with shield surround you.
Imagine you have fire/poison/arcane under your feet.

Yes, reduce damage reduction will help players to progress in MP4-MP8.

If you look at MP10, it is not quite possible to farm.
Just give you a scenario, 4 illusionist elites will spawn into 16 elites.
And they cast shield on each other.
By the time you kill all the clones, they already have new clones with shield surround you.
Imagine you have fire/poison/arcane under your feet.

But they said its inefficient to farm at MP10 right? I mean I know some like the challenge... but may be just lower it to MP8 perhaps?>

My comment is, the main problem is not the damage.
It is the HP of the monsters.
Imagine 4 illusionist elites that cast shield on each other. 

High monster damage could be the secondary problem though.

Imagine that when we fighting those elites in mp10, ur kid cry and say: I wan BaBa, I wan BABa... Haha, I won't go higher mp because my time to play game no stable..

yesterday follow pro MP6 also i die like nobody...

7xx AR really not enuff...

but now i think can tahan abit since reduce dmg...

But yesterday elite abit ganas la... arcane, molten, descrator and vortex... die lor like this... 

stake more LoH, Life Leech, AR, armor and ias. surely not die. 

WD Wira already power now 

MP1: 109.60% (down from 114%)
MP2: 120.12% (down from 130%)
MP3: 131.65% (down from 148%)
MP4: 144.29% (down from 169%)
MP5: 158.14% (down from 193%)
MP6: 173.32% (down from 220%)
MP7: 189.96% (down from 250%)
MP8: 208.20% (down from 285%)
MP9: 228.18% (down from 325%)
MP10: 250.09% (down from 371%)

That mean, those that farm in MP5 (previously 193%) can probably farm in MP8 (now 208%)... the damage reduction is huge...

MP1: 109.60% (down from 114%)
MP2: 120.12% (down from 130%)
MP3: 131.65% (down from 148%)
MP4: 144.29% (down from 169%)
MP5: 158.14% (down from 193%)
MP6: 173.32% (down from 220%)
MP7: 189.96% (down from 250%)
MP8: 208.20% (down from 285%)
MP9: 228.18% (down from 325%)
MP10: 250.09% (down from 371%)

That mean, those that farm in MP5 (previously 193%) can probably farm in MP8 (now 208%)... the damage reduction is huge...

ps: but agree with ALeUNe that HP is problem... that's main reason I refused to farm in higher MP, i can kill twice as fast in lower MP and it's more fun.