Do women prefer "it" hard and fast or soft and slow?
A combination of both would be the most pleasurable.
Good sex usually starts slow and then builds it up. Towards the end it can be hard and fast, but when you go hard and fast too soon it’s not pleasurable.
. Any woman on any particular day enjoys “it” in varying ways, there are days/nights that she may want to be treated as a nasty whore and other days she may enjoy being a princess.
All I can tell you is good luck in figuring this out. LoL
But I still enjoy the adventure of finding out, hope you will too