I have a Hex router at home (already since last year on ROS7, currently 7.2rc5) and one of the devices connected to it, is a Linux VM farm running on an old laptop (i7 processor and 24Gb or RAM, why waste that HW
).
On that farm there is 1 VM running Grafana which does (using python script) an external speedtest to check my ISP connection every hour.
I have that thing running since some months now, NEVER have I seen speed drop to 100mbs. It's always a bit lower then what my ISP advertises for my connection (190-ish, sometimes a drop to 130/140 Mpbs but never below 100Mbps).
So I am also curious to know what version you're running on it.
Do you see this also for connections towards other devices or only towards that linux box ?