What is the best settings in open wrt to improve internet for gamers?

Hi
I already put SQM, tried https dns proxy, what else can i do in open wrt to improve my hit dettection in fps games, what softwares should i install, i play on 10 ping, but the game fells like 100 ping, cod mw3

What's the ping while playing the game then ?
What's your internet speed ?

In game its around 9 to 12ms, but i dont know why when i play private matches , like 4v4 the game is different, bad hit dettection, sensitivity is slower, it feels like i have a delay.
Internet speed 500 down 200 upload
I use cake instead of fq codel, i also use cake -layer or piece of cake

People say the game has dedicated server, but it seems like p2p

What is the name of your router?
Could be underpowered for cake at those speeds.

Edge router er x

I set 90000 kbps down 30000 upload
I recently did a bufferbloat test, and the results were A+ jitter 1.5

I guess you've tried fq_codel and it did not improve?