XC90 T8 brief power loss

[Farmergavla]

Our 67 plate T8 with about 80k miles has just developed an occasional blip in power (very brief) when you put your foot down, particularly under load (say uphill). We took it to a dealer and they diagnosed an air mass volume sensor fault and replaced it. £650 lighter we still have the same problem. My wife has seen similar stories on other sites suggesting this is a common fault relating to the eRAD or something and will be £3k or £8k to fix/replace. Before we take it back and have them diagnose that we are tempted to chop it in and go back to a traditional engine (probably petrol) and it might have a better trade in without the diagnosis. Don’t really want to spend the money on a change or a fix, love the car, it’s a beautiful drive and such a solid comfortable car, Anyone heard of this issue or have experience?