Problem with tacx neo. Power reading higher than expected

Hi all, My Neo after almost two year without any fault today start reading higher power numbers. Around 20% more than my PM.

I expect some difference but mainly for drive train losses, So PM reading higher number that the smart trainer. This is what I see usually.

At low cadence it seems to have also some cobbles/gravel style vibration.

Not sure but it seems also a bit hotter than usual but I'm not checking regularly the hardaware temperature.

Firmware seems updated to the latest. 

Any suggestion? advice?