18 turns of research to upgrade level by one step

[Treefrog]

Somebody check my math [&o] but by my reckoning on average it takes 18 turns of research to upgrade one level (i.e. from level 1 tanks to level 2 tanks). Sound about right?

This does not factor in espionage helping or interfering with your research.

[Treefrog]

Using two research chits apparently slightly more than doubles the speed.

[taffjones]

Hi Treefrog.
If your opponent is at a higher level of S&I it reduces your speed in getting a breakthrough.

But I must admit even double chitin S&I in v1.05 I am finding research is slow, whichever side I am playing.