BigBoyJimmy

In its current state, the game is unplayable for me *without* throttling connection. 
Gigabit connection, base ping of 3–5, without throttling, the game feels "fast". I shoot first die first always, it's like i've been nerfed.
Throttle using Duma to 1up/1down, the game feels like its "slowed down", steady and I don't lose guns fights that I know it should be winning. 
If I didn't have a Duma and I was using my stock provider equipment, the game would be unplayable.
I reset router to factory, all I use are the QoS and I ring fence my home location (UK) and play on those servers. I don't feel the need to force other servers when throttling. No TP, no UPNP.
Nothing else works. I've changed settings to get perfect buffer bloat, experimented with capping speeds at different levels, it just feels like the game is still punishing people with 'good connections' when it should be the opposite. It's 2023. There is no reason for lag compensation to exist, there has been enough time for people to adapt to new technology and faster speeds. Given the cost of consoles and games, there is no reason to cheap out on internet. You can't use location an an excuse either as you may not get commercial ISP's in your remote area, but you can always use specialist providers and dedicated lines.

Yes. Around 80-90ms.
if I play low ping on the UK/Europe servers, it should be a benefit, but it’s not. Ping isn’t king in this game, neither is (a good) connection. 
 

Shoot first die first has always been my experience with CoD games ever since I started upgrading my connection. 
Now I'm on Fibre with very good ping and it's like a disadvantage rather than an advantage. 
I'm in the UK, put geo filter to USA servers and limit the bandwidth to my Xbox to <1mb both upload and download, helps significantly because as soon as I turn off everything and play without any settings/filters, i get beamed whilst having a pea shooter.