Error in power recording since last firmware update

Since the last update, my fenix 5 plus keep recording error power files. In fact every time it keeps recording one absurd peak of maximum power (+33000w...) which corrupts all average datas. I record my training session using also an edge 520 which works fine. Power come from a Rotor 2inPower. Any clues ? I have already unpaired/repaired the device and the Pb remains...