I have a Netgear R6400v2 as my main primary router connected to a fiber connection. To that router I have another Netgear R6400 connected with cat 4 or 5 lan cable as a secondary router set as an access point (I didn’t install it and it is in the wall but from its age I am guessing cat 4 but more likely 5).
My computer is connected to the secondary router with a cat 6 cable and I seem to have some speed issues.
I have a Nighthawk app for Netgear and when I speed test the primary router, the test results are always around 100 mbps while speed test on the secondary results always around 50 mbps.
Where should I be looking for issues?