I finally downgraded from 1 Gbps to 500 Mbps. My reasons:
1. Most of the routers are not able to to achieve 1 Gbps. This includes the AC1200 and DIR882 provided by Time. Even the high end ones like AC5400X can only achieve 920+ Mbps.
2. The 1 Gbps speed is only for download and maximum upload is 500 Mbps.
3. My AC1200 can reach 500 Mbps download and upload on my current 500 Mbps plan. So I am getting what I am paying for.
4. Most new devices on WiFi can only achieve 200 to 400 Mbps max even if you are using the latest and greatest phone or laptop.
5. On 1 Gbps plan, my WiFi on my Note 9 can achieve 300 to 400 Mps max. Now, on my 500 Mbps plan, I am also getting the same speed and I am paying less.
I am aware that some people are able to achieve 1 Gbps download but I think this is just a minority and you need to upgrade your hardware (router).
Therefore my conclusion is that you don't get what you pay for in 1 Gbps.
500 Mbps is a better deal as you get what you pay for lesser price.
Something wrong with your setup.
My wifi on pc goes 9xxmbps via WIFI.
Note9 goes 650mbps ++ on 4 bar only.