You can mess with the code all day long, but you're not getting away from raw latency.
The modern matchmaking approach groups people by skill not latency, so you get a pretty wild mix of latency.
It feels nothing like the old regional servers. Sure the skill mix was varied, but at least you got your ass handed to you in crisp <10ms by actual skill. Now it's all getting knife noscoped around a corner by a guy that rubberbanded 200ms into the next sector of the map already while insulting your mom and wearing a unicorn skin