It take a little time for practice to get used to the new set up.
When I went to 47" driver, it took almost one full season and numerous driving range visit to get the feel of it.
Everything else being the same, the shorter the stick the faster it'll reach the golf ball. You said you could feel the head, Be mindful of where the head is, deliver the head to the golf ball within your normal ability .
My personal experience is also 15-17 yards shorter with a 43"-44" driver instead of the 45.5"-46"