Elgrand generator failure

Whoa, that's rough on a 2022! I had similar issues on my old Corolla, but it was way older and the battery was totally shot. Before you jump to the generator, have you checked the battery connections and voltage? Maybe it's just a loose wire or a dead cell in the battery causing everything to freak out? Misfires can also cause all these issues

Battery connections are clean and tight. Voltage seems normal at rest. How would a bad battery cause the engine to lose power?

Hmm, if the battery is testing okay and the connections are good, and considering all those symptoms together, yeah, it really does sound like the generator is failing to properly charge the battery while the engine's running. The engine power loss might be because the car is pulling power from all the other components and cannot sustain it. Plus, with all those electrical problems, your engine is likely going to die on you. I'd say take it to a trusted mechanic and get that generator tested ASAP.

Confirmed: defective generator. Replaced for 960€. Thanks for the input.