Before DriverPack, I downloaded the drivers from the official sites but I experienced issues even with them. Why are the drivers in DriverPack more reliable than those from the manufacturers?
In order to make our driver database not only the largest but also the most stable, we keep working hard on improving it permanently, and we even fix the bugs which the official manufacturers allow! We use machine learning technology and thanks to it, our selection algorithm is constantly improving. And that is exactly why the drivers from DriverPack are the most reliable: -)