Delhi Sultanate

it says: If you garrison scholars in your mosque you should get increased research speed

Just did a AI game and it didnt increase at all and i had 16 scholars garrisoned

Each mosque can only have 3 garrisoned scholars, so unsure what you mean. I am also learning the Dehli Sutlanate civ and it works just fine for me. I guess you’re trying to research from buildings that are not within the area of effect of the mosques.

All buildings have to be in the influence radius of the mosque, if you build more than one, you should make sure to connect their radius as well.