[Dubya]

Just something I was thinking of... Try in OnPlayerConnect well.. Add this:

pawn Code:

#define MAX_PING_ALLOWED 1000 // Or whatever you want it to be.
public OnPlayerConnect(playerid)
{
    if(GetPlayerPing(playerid) >= MAX_PING_ALLOWED)
    {
        SendClientMessage(playerid, 0xFFFFFFAA, "You have been kicked. Reason: Max Ping.");
        Kick(playerid);
    }
    return 1;
}
// OR:

// Add to OnGameModeInit:

SetTimer("PingCheckTimer", 5000, true); // 5000 == 5 Seconds. True == Repeating Timer. False == Non-Repeating Timer. // Meaning it will repeat the check, every 5 seconds.

// And now the Checker.

#define MAX_PING_ALLOWED 1000 // Or whatever you want it to be.
forward PingCheckTimer(playerid);
public PingCheckTimer(playerid)
{
    // Kick players with a high ping
    if(GetPlayerPing(playerid) >= MAX_PING_ALLOWED) 
    {
        SendClientMessage(playerid, 0xFFFFFFAA, "You have been kicked. Reason: Max Ping."); // 0xFFFFFFAA  == White.
        Kick(playerid);
    }
    return 1;
}

For more help, visit: https://sampwiki.blast.hk/wiki/Category:..._Documentation - Scripting Help.
For more help specifically with this (What I just gave.).
Visit:

• https://sampwiki.blast.hk/wiki/GetPlayerPing - It is help with GetPlayerPing.
• https://sampwiki.blast.hk/wiki/GetPlayerIp - Help with GetPlayerIp.
• https://sampwiki.blast.hk/wiki/SetTimer - Help with SetTimer.