Quality speed modules are also efficiency modules

[wanne]

I assumed quality_affects_energy_usage+allow_consumption is kind of a way to prevent energy surplus loops.
But there is a catch: Rare speed module 2 and 3 have higher speed multipliers than energy multipliers. So event without modded modules you can get better efficiency.
In theory you can do that even with 4 common productivity module and 1000 uncommon speed beacons since effect percentages are stupidly applied additive instead of multiplicative. But this very theoretical.
Is there a nice way to prevent such things?

[Osmo]

I think you can make consumption affected by quality by setting this property to 1.0 https://lua-api.factorio.com/latest/pro ... multiplier

[wanne]

Yes. But this kind of defeats kind of the idea that better quality things are better. Even so more speed and more consumption is kind of good enough, since you can offset that with green modules.