I haven’t upgraded to 1.4.16 I just upgraded to 1.4.15 and it seems to be working still(Xcode 7.0.1). I don’t know what those lines are from since I don’t fully understand Xcode and all the file types. The error(instruments-without-delay does not work) is normal as it says that on mine as well. If you follow the link I put in(Xcode 6 + iOS 7.1 sim slowness?) it does a work around that works.