@pcuttle 

OK here is the situation now. Even thought I was using the cable that came with the new modem to connect the modem to the router it evidently was defective. However when I replaced it I still got the same speed readings. Out of desperation I rebooted the modem and success. I now get 355Mb on a wired connection. Unfortunately, I only getting less than 60Mb on 5G and around 80Mb with 2G WiFi. I have used a WiFi Info program by NirSoft to monitor the WiFi signals and, WiFi max speed is for my router is 1300mb 5G and 216 for 2G (See pic).

When I check the WiFi adapter status I only am getting 173.3Mb (See pic).

I presume this is the max speed of the WiFi adapter. I guess the only way to improve the WiFi speed is to replace the adapter, which I'm starting to suspect. Especially since my 2G speeds are better than my 5G.

  @RodmanB 

Windows update rarely provides the most recent WifI adapter drivers.  Chances are, you have an Intel adapter and they update drivers regularly.  Use the device manager to verify your adapter make and model and see if you can find an update.  Intel also has a useful driver update tool to check for you.

I am happy to report my WiFi issue is fixed. Unfortunately I can't explain why. While in the process of trying to resolve my issue, with the help here and TP-Link support, my computer developed another issue unrelated to network connections. I had to remove the motherboard and resolve some cold solder issues on the KB/Mouse USB block. After reassembly the WiFi went to 300+ Mbits/s. My only conclusion is that maybe removing the WiFi network card, to remove motherboard, made some unexplained difference. Anyway, the issue is resolved. Thank you to all who tried to help in the resolve both here and support. Have a Great Day, RodmanB