I’m using the latest TOS 6.5.2
And i have a 1.5/1 gbs internet connection (using turris sfp+)
Packet steering gives me a light speed advantage (no SQM)
I can get up to cca 1580 Mbps download and 1080 Mbps upload from the device
and cca 920 Mbps for download and upload from a LAN connect device behind NAT
the CPU is used mostly by the speed test apps on the device
from the LAN with NAT