April 1, 2022 patch
The lower-left of this screenshot would previously have been a clear view of underwater zones, but now gets filled with the water color. This should help protect secret underwater locations and bases.
Fake Lag Threshold:
In recent weeks the exploit of artificially delaying game packets AKA "lag switching" has become more of a nuisance. To combat this, a new setting in the server Config.json file "Fake_Lag_Threshold_Seconds" has been added with a default value of 3 seconds. If there is a delay between input packets from the client greater than this threshold they will be penalized for a corresponding duration minus one second. For example if the threshold is 3 seconds and the server does not receive any inputs from a client for 3.2 seconds, they will be under penalty for 2.2 seconds.
During a fake lag penalty the client's damage against other players is multiplied by the "Fake_Lag_Damage_Penalty_Multiplier" setting which defaults to 0.1 or 10%. For example if the multiplier is 0.2 then the client will only deal 20% gun and melee damage against other players while under penalty.
Unfortunately false positives are relatively likely if the client framerate hitches, for example while loading a dense region. With the netcode rewrites of the past year these hitches should gradually be ironed out, but for the meantime the "Fake_Lag_Log_Warnings" setting can be enabled to help tune the threshold.