[ChevyGuy]

I've had a really low idle and that's when my lights start flickering and the car kinda sputters like it wants to die at a stop.

If the RPMs drop too low, I'd expect the alternator to be turned off to prevent stalling the engine. That's maybe what's causing the lights to flicker. I'd be more concerned about why the RPMs are dropping low. When that happens, you might want to switch the transmission to manual mode and see if it goes away. If it does, then you're looking at a transmission problem (not switching to neutral).