Is there anything that can be done to improve it if you're not already hard wired via ethernet to your modem? I'm debating getting a DumaOS router again but hit reg improvements for non-wifi users seem to be mixed on here. My ISP plan is 1gigabit fiber. I've messed around with a R2 around when the game released, but geo locking to certain regions (I'm in the US Northeast, so tried Florida, Georgia, Ohio, and Chicago) didn't seem to do much. I generally had better ping when not connecting to Chicago, as that's the server region I seem to SBMM the most when not get locked.
I've also tried different combinations of receive / transit buffers in my ethernet settings, etc. to no avail.
I can literally tell when I'm on a "good" servers since I'm on M&K and the input lag is instantly gone. The game feels much faster, the hit reg is instant, and the TTK is night and day. This issue is also only present in Warzone 2 as MW2 MP feels great.