I've played on these servers since late 2018, and I have never seen anyone with persistent issues. We have a vast amount of people playing this server for 6-10 hours a DAY and they are all from different geographical locations.
With that said, I don't think that many people, if any at all, persistently have issues with latency or anything else. The occasional hiccup is guaranteed when doing stuff online. But nothing as persistent as you proclaim.
I'd like to break down all the funny images so you can understand what they mean and some reasonable causes for them so maybe we can get an idea of what's going on.
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This means that the server you are playing on is at an increased load compared to normal. This might be caused by high local traffic or even an increase in players. BF4 servers were likely build to easily withstand the load of the normal 64 players (68 if you wanna count spec and commander). I don't remember ever seeing this in game, and we've had the servers at up to 120 hz before. NO issuse
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These pictures indicate packet loss. YOU are a software engineer so you SHOULD know that we cant control packet loss. That is the internet doing its thing.
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This one is for your ping! You say you live in the US, so your ping should be relatively fine if you have a good internet provider. I've seen people with good connection from places as far as Texas have a ping under 10 if they have fiber, mind you the server is in Chicago. WE also can't fix you ping.
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this symbol is for highly fluctuating ping. WE CANT CONTROLL THAT!!!
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This one is when your FPS goes below the tickrate of the server. This happens when YOUR FPS goes below the tickrate of the server. The game is 10 years old this year, if your PC cant run the game at 60 FPS maybe try turning on V-sync or something.
As you can see, almost all of these icons are out of our control. We cant control the picture on your screen.
Lowering the tickrate likely will not fic the problem bro.. SOrry