I have not seen serious problems with iOS 11, MD works as smooth as before. Only one thing is not ideal.
When launching MD, it opens in reduced size (zoomed out), with the zoom tool and the hand symbol in the lower right corner visible, like it is in slide-over mode. Sometimes it opens normally, but I could not find out yet, what it depends on. Could this be fixed?
Ah, I forgot, I have an iPad Pro 9,7"