Automation - stuck and skipped MIDI notes

I’m often getting stuck MIDI notes (have to use MIDI Panic to reset) when there is a change in automation and sometimes the notes are not played at all on top of automation points - especially if there are more than 2 automation points per bar.

This is happening most often on TAL Noize Mak3r, but other plugins as well.

How do you deal with automation?

Using Ardour 4.4 and KX Studio 14.04
512 samples, latency 11.6ms, 0 Xruns
CPU frequency scaling set to Performance