I have a Peplink Balance 1350 (Firmware 6.3.4 build 3613). I have a Fibre connection plugged into WAN 1 via PPoE.
The download speed is running as expected, but the upload speed is dreadfully slow (0.23 Mbps).
I’ve tried it with a PC plugged directly into the PPOe and the upload speed is normal (good).
I’ve also already tried factory reseting the firmware and only setting up the WAN 1 (all other settings at factory default).
The PPoE settings are pretty boring and typical.