drive without issue and then suddenly the engine will shut off?

Car will start and drive without issue and then suddenly the engine will shut off, RPMs drop to 0 a chime sounds and engine light flashes, then roughly a quarter second later it comes back to life aggressively, RPMs shoot back up and it lurches forward. It mainly happens when accelerating from a stop or up to highway speeds. The car has also fully stalled on me one time. I was told it could be the crankshaft or camshaft sensors, so they have been replaced but it has still happened. Only code is for a downstream O2 sensor which I have been told would not cause this issue. No other codes have ever popped up and there are no lights actively on the dash.