Leafar

Well, I literally tried everything and the shoot first die first scenario always still happens. The problem is not on our end, it's the game's shitty netcode and possibly lag compensation. The best thing you can do to make the game a bit more enjoyable is to simply use vpn's to get into bot lobbies.

85% should be fine regardless of your speed. I hope this helps for you.

Yes with the QoS sliders. I'm on a fiber connection with 1gb up/down and 6ms ping. I set the slider to 85% because the common consensus to beat buffer bloat is usually 15% less than your actual speeds and then adjust accordingly. For me 15% less works fine and gives me good results on dsl reports and waveform. I'm on day 2 with these settings now and it still works fine. Rarely the occasional shoot first, die first scenario, but when it happens it's always the same person. So you can't fully eliminate it.

Lag compensation is the main culprit in this particular game. I found a simple semi-solution (because there is no real one to one solution no matter what) At congestion control you lower your download speed as usual, but the upload you leave at 100%. This will help sort of manipulate your connection into making the cod servers think your connection isn't as good. Not sure if I explained it right, but so far this has been a big difference to me.