MOTU Midi express XT and dropped notes in Cakewalk

[Beethovun]

Hello...I have been using my MOTU Midi Express XT for years with Sonar and now the new Cakewalk.  After an upgrade of Cakewalk awhile back I experience a "log Jam" of midi only when I use my external gear (Fantom X, JV2080, etc).  As I am playing audio will just drop out and then all of a sudden kick back in almost like the midi notes got backed up going in.  It will record the parts correctly but playing back and in real time the notes get dropped.  I know this is an issue with Cakewalk as I had a rep from MOTU on the phone who ran me through several different things that all worked and showed that when I bypass Cakewalk the interface works fine.  As I mentioned I have been using this hardware with Cakewalk for years and this just started happening a few upgrades ago.  If I am using any software based samplers (Kontakt, Superior drummer, Omnisphere, etc.) there is no issue at all.  Only when using outboard or external gear.  I see on line that several people have had this issue but I have never seen a solution posted if any.  Any info would be most appreciated.  Thanks so much.