On the underside of the engine you have a sensor for your crankshaft rotation.
Take it out, put an O ring spacer to have the sensor farther away from the crank.
I’m not running DD2 but a tuned Senoir, one day I was next to a professional team in the pitlane, running DD2 , they had the same problem. They changed carb, wirings,ignition coil etc etc. Madness. Until the moment a technician from another team came in and he told them to place the o ring spacer.
10 minutes later , problem solved.