Stuck/hanging midi notes in Cubase 8 upgrade - need help!

I recently upgraded to Cubase 8 from 5, and now have problems with midi notes getting stuck. I can barely play a phrase and have to constantly click midi reset. It’s all internal sounds, and all libraries have the issue now. It doesn’t appear to happen in play back mode, but only when I play on my external midi controller. It was never a problem in Cubase 5. See my rig in my signature. Asking for help please.


Could you have a look on this thread please? It sounds similar, to me.