I have RP Filter set to no currently. PCC setups are not designed to work if RP Filter is enabledmaybe SRPF impact. try disable RP filtering if used(usual/reasonal for bras/cpe only), temporally.
I see it, 130.3Mbps from your bandwidth test is UDP, the rest is real traffic. I can't do tx and rx 50Mbps, mine is one way tops.Do the math again and read 2 posts up.