Ipad - Yamaha Kx61 - Ikmultimedia Midi Interface, Midi interface does not work correctly Options

I have an iPad Version 2.0, ik Multimedia interface and Yamaha KX61.

I'm having a problem with the midi interface in AniMoog, Sunrizer and other synths.

First, the Yamaha seems to play monophonically. 2nd, there seems to be delay / distortion in the applications. Like midi is stuttering. I'm hoping to borrow a friends keyboard to rule out an issue with the KX61, but I was wondering if anyone has had similar issues. I've also got a Lexicon Omega that I might try as a midi interface to see if the issue is the ikMultimedia. Hoping someone else had similar problem and figured it out.