Hello

I am having problem with my router download speed. I have Spectrum Cable and In the past I have speed checked at upper 400MBPS downloads but

now I am at half that or lower. I did plug my hardwired computer direct to spectrums box bypss the router and speed was in excess of 550MBPS.

I just upgraded the firmware to latest version. Did the check for latest version and latest is now installed in router.

Is there anything else I can do or check to improve speed?

Thanks