Are you doubting whether you got real masteron this time or the last time you ran it since you didn't experience the vivd dreams?
Technically both should have the same effect on you though right...prop or enenathate
This would be going on my head but I've experienced vivid dreams myself.... can't remember if it was from the cyp or prop version of test now but one of those. These things have the ability to affect your whole being and I'm sure you aren't running the exact same "cycle" you did when you were on the enanthate. I've experienced a few sides like insomnia, sweating, mood swings, and the dreams when adding a new steroid or increasing dosages. Luckily so far my body seems to adjust and they've all gone away on their own....wish I still had the dreams though.