Takes 3 hours rather than 10 seconds

H85 defines this as a -5% Nuisance Effect for Morph but it only applies the first time replicating a new species.
3 hours is 180 minutes is 10,800 seconds
By comparison if using Takes Extra Time to get there in ALL circumstances, here is how many doublings it would take:
*20,40,80,160,320,640,1280,2560,5120,10240
That is 10 levels! Takes Extra Time 10 -100% is canon for the Succubus, for example.
So the limitation is 1/20 the amount it normally would be.
This is likely some kind of either/or limitation. The other half being "accessibility: races I have copied before". When that applies, the TET would not apply.
Either/or normally multiplies but probably incurs the -80% cap in this case, otherwise a -100% limitation could not reduce it at all.
The way either/or limitations works is explained in restructurable Magery, it's a Reversed Limitation or Reciprocal Enhancement.
You buy an enhancement to cancel out a limitaiton and then apply the other limitation that.
Obviously the -80 applies there. Which is why TET beyond 8 is useless for either-or.
However: you could split TET into multiple batches for this purpose to go beyond that. The math is the same but you don't need to worry about the cap. For example:
-50% or -40% = -20%
-50% or -20% = -10%
Category:Nuisance Effects