+1. I never thought I say this, because everyone's level of tolerance is different but I'm seeing all these issues even with a new character, just as coming out of Helgen. But keep 1.5. Unless you really, really, really want horse combat. Game ran better with Atomic nirnroot (maybe 'cause I was blinded most of the time)
Edit: If you do decide to install this... thing. Go have a run from whiterun to rorikstead. Or take a tour near riften before installing. You are going to miss those good times
