I’ve recently purchased a TRB500 to serve as my 5G modem gateway. As a developer and IT enthusiast I prefer to use enterprise-grade hardware for it’s stability and flexibility. First impressions were very good, this is really well built device with decent software which offers way more control than any standard consumer-grade hardware.
However, there’s one major issue.
I have a pretty good 5G signal. Right after booting up the device, I usually get somewhere around 400mbps download and close to 100mbps upload speeds.
However, after some time, download speed goes down to about 220mbps or so even though the signal levels remain the same. Rebooting the device restores the initial performance, but only temporarily.
Upgrading to the latest firmware does not help.
I found a couple of existing threads about this issue. There was a modem firmware update posted which supposedly includes a fix for this issue. I have tried installing it but this did not change anything.
Further digging in SSH shell confirmed what was already posted in one of the topics - after some time NAT acceleration stops working and the network speed becomes CPU limited. Since the main processor is rather weak, this severely limits network speed.
This bug badly needs a fix as it essentially cripples the performance of an otherwise really decent modem gateway.
Any solutions ?
If you need any shell command output, exact software version numbers, etc. I can post them here, just let me know what you need.