@Remo_Pr0@ClassicII_MrMac Maybe it’s the same issue/incompatibility that makes Chrome (or Chrome based apps like Discord) take almost a minute to launch?
Follow up: Wrong voltages throughout. Noticed ground points in the right half part of the board were not connected to input ground. Couldn’t find the break, but soldered a bridge and now it’s outputing correct values. Just have to put it back on the car and test it…