20TPS but LAG why?

18:43:01 [INFO] Plugins (55): Likeaboss, AppleTree, GroupManager, SuperWheat, Re
dClock, Vault, SafeCreeper, TreeAssist, ChainBrewing, AutoMessage, PerformanceMo
nitor, McGroovy, AuthMe, RetractableBridge, Permissions, SnowBallNextDoor, creat
urebox, OpenInv, mcMMO, Catacombs, Lift, TimTheEnchanter, ModifyMessages, WorldE
dit, NoCheatPlus, EnderSpawn, CreativeGates, iZone, EnderCrystalizer, ColoredSig
ns, PorteCoulissante, CombatTag, RepairChest, PvPTimer, SimpleRestart, KeepItems
, iConomy, CoreProtect, Timeismoney, Lockette, AutoSaveWorld, MoneyDrop, MobHeal
th, Essentials, ShowCaseStandalone, BlockHat, dynmap, SimplyVanish, EssentialsCh
at, EssentialsProtect, EssentialsSpawn, Dynmap-Essentials, Factions, WorldBorder
, Dynmap-Factions

@ECHO OFF
SET BINDIR=%~dp0
CD /D "%BINDIR%"
:start
java -Xmx4G -Xms1G -XX:+UseFastAccessorMethods -XX:+AggressiveOpts -XX:+DisableExplicitGC -XX:+UseAdaptiveGCBoundary -XX:MaxGCPauseMillis=500 -XX:SurvivorRatio=16 -XX:+UseParallelGC -XX:UseSSE=3 -XXarallelGCThreads=8 -jar craftbukkit-1.3.1-R2.0.jar
goto start


PerformanceMonitor show 20TPS

player say server have delay

someone can help me?

 

This can possibly be a network lag maybe?

Are you hosting this server at home, or a paid host?

 

Offline-mode servers are not supported here.

 

you can run authentication plugins without being a pirate / offline mode. they could also be stuck behind a proxy at a college or something.