Motor boating? Could it really be this?

My original post is below: I have a Roland Sound Cnvas that I really do not use but i had a Edirol UM1S usb midi I|O connected to it. I also had the UM1S enabled as my midi out driver. After much trial and error I found that disabling it "seems" to have cured the motorboating issue. Is this posasible? I mean even though I wasn't using the SC88VL all was enabled. Because I also have midisport2x2 anniversary hooked up (USB also)
I use the midi sport for my Guitar AXEFX Ultra.
So helpfully that was my issue and removing the stupid little plastic UM1S was it.
I can only hope.
 
Orig:
I said "I think" because I am not sure if this is what everyone calls motor boarding. Sounds like a motor boat, so............
 
Never, ever had this issue. Now, this is "only" while playing a project with about 20 tracks, all midi softsynths. Mostly Kontakt 4+ and Dim Prox64. Song will play for a while then starts the motor boarding until I finally get the "not responding" in the title bar of X1?
I am at 2048 samples in my Layla3G. All projects are recorded at 24\41+. These are projects that always played back fine in previous versions. But it is happening way too often-couple of times a week. My machine has plenty of everything.
All un-needed services are turned off as they have been in every PC I have owned (built) in the last 15 or so years.
No FX at all i9n the projects.
I am up to the latest build in X1b. The only changes have been W7x64 updates that M$ puts out. Guess it could be some of those, but doesn't seem all that likely./
 
Thanks

Motorboating.mp3  - My motorboating sample (Sonar 8.5)

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