Hey everyone who has contributed to this. Thanks so much for the awesome work!
I’m pretty new to midi, and very rusty on UE4, so please have patience 
I am trying to build a simple game like https://www.synthesiagame.com/ to help my daughter practice drums.
We have a affordable electric drum set, and I have managed to assign each drum hit to play a sound in UE4.
This was a bit harder than expected, because the drum sends 3 events on each hit, and I had to use a combination of two of those events to identify each drum.
The problem I’m having right now is LATENCY
There is about half a second delay between me hitting the drum, and hearing the sound.
Any ideas on how to address this?
Thanks