Problems with Tartarus V2 / Synapse 3 and turbo keys.

Hi, New here so not sure if this is the place, but i have an issue. Whenever i assign a button to be a turbo key, say for example I have set up button 12 to be 'A' and set it to turbo key speed 10. While holding it down if i then use the d-pad for anything it cancels the effect and i have to let go of the turbo key and repress it. I started using turbo keys because "play while key is pressed" macros seem very buggy in synapse 3 and just stop working randomly to the point where you either need to reassign the key or just disconnect / reconnect the tartarus. Anyone else have this issue or am i just lucky? Cheers SH