Crash after upload speed test

[o51]

Hi, im runnung pfsense on Atomic pi. Pfsense does routing on single nic with vlan setup for different networks including the wan side. On the wan side im connecting with pppoe to a ftth modem. The speed should be 70/70. But when im trying to do a speedtest on the wan side it crashes when it comes to the upload test. Download test works fine. The box isnt responding anymore when the upload test begins.
Is there a easy fix for this? I saw there are a few tweaks in loader.conf but no luck for me yet.
Cheerz

[Rico]

Try this Realtek driver: https://forum.netgate.com/topic/135850/official-realtek-driver-binary-1-95-for-2-4-4-release

-Rico