Mouse click vs midi note CPU spike

Hi all,

Hoping someone can help with a weird issue I'm experiencing.
I have a sequencer that when started (by simple button) using a mouse click it runs with no change in CPU (about 2%). When I assign a midi controller to start the sequence the CPU spikes in the red and crackles! There is no audio ins/outs or processing its purely event driven. Vst or standalone no change. 5.9.2 or 6 no change..

Unsure of the difference between mouse click and midi note? (Changing control rate to 25 doesn't help either)

Please help if you have an idea!

Thanks in advance.

 

Don't know, but I wonder if this is related to threads. Does anyone know if MIDI events are processed on the same thread as GUI events?
Are there Primary feedback loops involved?
How complex is the structure?

 

There's no loops. I've troubleshot by deleting macros until the problem goes (about 9/10ths of the ensemble), but its inconsistent, as in I can reload and delete just the macro seemingly causing the issue but still have same issue. So in that regard its not complex ensemble once most of the ensemble is removed.

 

much easier to help if you just post the ensemble.

 

Thanks guys, solution found thanks to Herw in another post. I sent the button into a Value module triggered by dclk from system info module, and put a step filter after it. Problem solved!