Reynolds Rocket

I have a 2017 Intimidator XD4 800cc 4x4. It will run great and then it's like it goes into safe mode and only runs on 1 cylinder. It's not fouling out the plug when it happens. Some times when I stop and restart it, it works fine. First I thought it was a spark issue, then a fuel issue, but I feel like it's a short in the wiring some place.