[CodyCummings]

The method you used to detect fake kills detects it at minimum after 3 seconds.

pawn Код:

public OnPlayerDeath(playerid, killerid, reason)
{
    DeathCount[playerid]++;
    if(DeathCount[playerid] > 3 && GetTickCount() - LastDeath[playerid] < 1000)
    {
        //fake killing
    }
    if(GetTickCount() - LastDeath[playerid] > 1000)
    {
        DeathCount[playerid] = 0; // reset death count to avoid wrongful bans
    }
    LastDeath[playerid]=GetTickCount();
}

That should do the trick.