I had a lucid dream and lasted about 45mins, I believe. Is the time the same in waking life as it is in a LD, because my last exprience said es!
Time is just as fast. However in a dream it often appears to be longer because we often skip the parts where you get from one place to another. To give it some logic our brain make it feel like we experienced that whole transition resulting in what feels like a longer dream.
I could tell you about a ND I once had what lasted in dream time several months 
In that ND I was kidnapped with two other children and literally spent several months in a very small room and could see how the two children lost their will to escape or even to live. It was a nightmare and it was one of the longest dreams I had so far. I’m still fascinated how this dream could take soo long though I was actually only dreaming about 50 minutes.
Best regards
Nate 