AP VS pitch goes wild in the TBM

[Concorde79 65]

And again the TBM AP is acting weird.. Now the AP VS suddenly just went all the way to max and I couldnt disconnect it.

Then it went -9000 and I could see the wheel go nuts.

Why is it that the patch always breaks the TBM AP...

[Mike S KPDX 598]

I fly this almost exclusively and have not had this issue with the VS (or another other modes).  Make sure that you dont have multiple control devices plugged into your USB ports and test via mouse/keyboard.  That will tell you for sure if your devices are effecting the inputs.