It's not additive, it's multiplicative. It's still a nice bonus though when you're using prod modules because even 2x prod1 module labs are a fair bit more expensive than non-moduled labs.Frightning wrote: Also, I am not certain of this, but I think that the Lab speed research is additive with speed modules, meaning it has fantastic synergy with Prod modules (countering their speed penalty additively, but I haven't tested this to confirm if it actually works this way).