There is still a lot of misinformation on the subject… so heres a small recap, hoping it shines some light on a subject that is unfortunately very vague for a lot of players.
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What the devs say[/HEADING]
From the dev-notes for the “Loot 2.0” update:
[ul]
[li]It is explicitly stated that Efficiency is a relatively small component in loot value calculations — no more than ~7% of the total loot value.[/li][li]The dev-notes also say that “Optimal Loot” affects loot composition (i.e., what you loot), not loot value (i.e., how much you loot).[/li][li]One dev comment: > “Efficiency… directly affects average TT return by 0-7%” and “DPP (damage per PEC) affects loot composition.”[/li][/ul]
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[HEADING=2]? What this suggests[/HEADING]
Putting the above together:
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[li]Efficiency affects your average TT (Trade Terminal) return — roughly how much value (in TT’d loot) you get relative to your cost. Because the dev note says Efficiency contributes at most ~7% of total loot value calculations.[/li][li]However, the composition of loot (e.g., ratio of rare items vs shrapnel, etc.) is affected by other factors — such as how optimally you kill the creature (matching gear/skills) and the DPP/efficiency of your kill cycle. The dev notes say Optimal Loot affects loot composition, not loot value.[/li][li]So yes: Efficiency does not appear to directly govern loot composition (i.e., what items you get) in the official wording. It rather tweaks the value side (how much you get back) by a small margin.[/li][li]Meanwhile, loot composition being improved (i.e., better items vs shrapnel) is more about matching gear/skills, minimising wasted cost (healing, over-damage, etc) and possibly your DPP. For example: “Loot value calculations and the composition of items in loot will be affected by properly matching avatar skills and gear … rewarding efficient kills with more interesting loot.”[/li][/ul]
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Why confusion exists[/HEADING]
Because in the community discussions:
[ul]
[li]Many players believe higher Efficiency does give better loot composition (more rarities, less shrapnel). Some quote statements like “Efficiency determines loot comp” or “Higher Efficiency = better loot drops”.[/li][li]But the dev notes seem to contradict that (or at least qualify it): Efficiency is “no more than 7% of total loot value” and “Optimal Loot only affects composition, not value.”[/li][li]The community blog/spoiler says: “DPP affects loot composition … Efficiency directly affects average TT return by 0-7%.”[/li][li]Some forum posts attribute to MA (the devs) the statement that Efficiency “does not directly affect loot composition.” For example: > “Efficiency has a direct effect on the overall TT return, it does not directly affect loot composition.”[/li][/ul]
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[HEADING=2]? Conclusion[/HEADING]
Efficiency only affects TT return (value) and not loot composition (items). Based on official dev notes, that is the more accurate interpretation: Efficiency tweaks the value side a little (up to ~7% or so), but factors like gear/skill matching, minimal waste, DPP, optimal kill time, etc., are what influence what you get in terms of item types (composition).
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[HEADING=2]? What this means in practice[/HEADING]
[ul]
[li]If you focus purely on Efficiency (say choosing a weapon because it has “high Efficiency”), you might slightly improve your returns, but you won’t magically get more rare items unless you also optimise other factors (skill/gear/match).[/li][li]To improve loot composition(i.e., more rares, fewer scraps), you’ll want to:[/li][LIST]
[li]Get your avatar skills (hit ability, damage professions) matched to the weapon.[/li][li]Avoid over-amping (using amplifiers too large relative to weapon) or wasting cost via healing/armor decay.[/li][li]Use a weapon/set-up with high DPP and good matching, so you kill efficiently, with minimal wasted cost.[/li][/ul]
[li]Since Efficiency only contributes up to ~7% of loot value, it’s a smaller lever compared to many others. So don’t over-focus on it at the expense of DPP, gear match, or cost control.[/li][/LIST]