Asking whether or not "religion" has slowed scientific progress is like asking if having eyes ******ed the development of glasses. The problem is that most people build their understanding of "religion" based on the Judeo-Christian-Muslim world they know, but if you try to distinguish them across a variety of societies it's clear that they are more or less the same thing; or rather, the distinction is irrelevant and culturally specific to ours.
In our society the heart of the distinction is really two parallel classes of cosmos-explainers that we have, and that is ultimately a result of having big church organizations and large groups of people convinced that church traditions are of supreme value. In opposition to the strenght of these, we have generated myths about past religious persecutions of "science" in order to promote our own values, myths such as that of Galileo and Columbus and the flat earth.