Midi notes hanging in PT10

I have this issue that I've dealt with for over a year but its really wearing on me. I am using pro tools 10.3.7 and I notice when using midi sometimes my notes "hang" and continue playing while I've stopped the track. Its very annoying. I usually hit playback and play the same piece again and the issue resolves itself almost like I have to "hit" the hanging note again for it to stop. I run all VI's and it almost always does this with every manufacturer of instrument except for piano VI's. My assumption is that there is not endless sustaining notes on piano VI's. What am I doing wrong?