A few days ago my Netgear router stopped working. So, I purchased a new one. It is the Netgear WNDR3400v3. My laptop is hardwired to the router. After setting everything up and running a speed test, I noticed that the download speed was only 70 Mb per second. Typically I get over 100 Mb per second.
My router is connected to a cable modem which was provided by my ISP (Spectrum). If I connect my laptop directly to the modem, the download speed exceeds 100 Mb per second.
I've seen information on the Internet suggesting that my router does not support download speeds that high. Netgear recommended changing the MTU. That didn't work. Yet another post I read recommended disabling IPv6. I haven't figured out how to do that on my router.
The fact that I can get full download speeds when connected directly to the modem implies that the router is the problem. I have opened a support ticket with Netgear, but I was just wondering whether anyone in the Experts community had any ideas.
Did you try with another cable ?
Is it a good quality cable?
Try with 1 to 2 meter cable and retest.
Try to factory rest your modem and retest,