cflorin2 wrote:Never have seen speed higher than 80 Mbps
What Cox plan do you have? What download speed should you be getting?
If you pay for a plan with a maximum download speed greater than 100 Mbps, you may have a bottleneck in your setup that's reducing your speed. If you have a 100 Mbps Network Card, your download speed to your computer can never exceed approximately 95-96 Mbps. Your download speed to computer can also be limited to under 100 Mbps by cat5 cables.
How to determine your Wi-Fi and ethernet connection speed will vary depending on your OS.
How to determine Wi-Fi and Ethernet connection speed on Windows 10 | Windows Central
Note: This discussion is getting a little hard to follow. I posted this before I saw your reply to modem questions. WiderMouthOpen , see cflorin2's reply from 7 hours before this one.