So, it looks to be isolated to the Pi 3B+. As far as I can see there are quite similiar problems known and discussed doing parallel stress on USB and gigabit LAN of the 3B+, see https://github.com/raspberrypi/linux/issues/2449.
So, it looks to be isolated to the Pi 3B+. As far as I can see there are quite similiar problems known and discussed doing parallel stress on USB and gigabit LAN of the 3B+, see https://github.com/raspberrypi/linux/issues/2449.