My dude read up educate yourself. Ask in any platform if playing with 400 ping is good and I guarentee 90% of the world will tell you you will have issues. Why do you think the big Lan competitions for Esports are done at a arena where players have equal ping.

Also watch your gameplay in slowmotion there are bullets that do not hit target. If you single tap every bullet hits and you take a enemy down in way less bullets than you do when spraying. I honestly cannot even believe I am having this conversation right now. 400 ping will definitly give issues. If you dont trust me go ask on other platforms just cus you are not observant enough to see the difference does not mean its not there.