Server FPS drops on connection and kill
Hello guys i have big problem please help me . When someone building, killed or entered the game thats making the server 10fps but when no one doing nothing, server fps is 240-250 please help me my cpu is E3-1240 v2 and my ram 16gb ddr3 modded server and tickrate is 30
Try unload one plugin after another and see if it will
fix this isuess. Might one of your plugin(s) is slowing down the performance because of heavy
calculations and so on. Make sure (if you run a dedicated server) to have the energymode on "High Performance" as well, gives
you most of the time a big boost.
My server is using %10 cpu and server fps 10-20fps (high performance mode is on)
In response to Talha ():
My server is using %10 cpu and server fps 10-20fps (high performance mode is on)
type o.plugins in console and report feedback here please

01 "Admin Chat" (1.3.0) by LaserHydra (0.01s) - AdminChat.cs

02 "AlphaLoot" (2.4.14) by FuJiKuRa (0.93s) - AlphaLoot.cs

03 "AutoCodeLock" (2.2.3) by FuJiCuRa (14.69s) - AutoCodeLock.cs

04 "AutoDoors" (3.1.2) by Wulf/lukespragg (0.67s) - AutoDoors.cs

05 "Better Chat" (5.0.19) by LaserHydra (7.06s) - BetterChat.cs

06 "BetterChatFilter" (1.2.1) by Kinesis (0.22s) - BetterChatFilter.cs

07 "Better Chat Mentions" (1.2.1) by Death and PsychoTea (0.03s) - BetterChatMentions.cs

08 "BetterChatIgnore" (1.0.2) by Togoshige (0.08s) - BetterChatIgnore.cs

09 "BetterChat Mute" (1.1.2) by LaserHydra (0.19s) - BetterChatMute.cs

10 "BetterLoot" (2.15.0) by FuJiCuRa / dcode (12.70s) - BetterLoot.cs

11 "Better Say" (3.0.0) by LaserHydra (0.09s) - BetterSay.cs

12 "BGrade" (1.0.49) by Ryan (53.71s) - BGrade.cs

13 "BlockStashPlacement" (1.0.2) by Flaymar (0.90s) - BlockStashPlacement.cs

14 "CarCommanderLite" (0.1.0) by k1lly0u (13.27s) - CarCommanderLite.cs

15 "Clans" (2.12.8) by FuJiCuRa (15.03s) - Clans.cs

16 "Chopper Tracker" (1.6.7) by Smoosher (10.17s) - CoptorTracker.cs

17 "CustomChatCommands" (2.1.1) by PsychoTea (0.13s) - CustomChatCommands.cs

18 "DiscordMessages" (1.8.8) by Slut (0.25s) - DiscordMessages.cs

19 "DynamicCupShare" (2.5.8) by Fujikura (121.38s) - DynamicCupShare.cs

20 "External Wall Protect" (1.0.3) by redBDGR (0.18s) - ExternalWallProtect.cs

21 "FancyDrop" (2.7.8) by FuJiCuRa (15.65s) - FancyDrop.cs

22 "Gathering Manager" (2.2.6) by Mughisi (0.23s) - GatherManager.cs

23 "GUIAnnouncements" (1.23.83) by JoeSheep (26.07s) - GUIAnnouncements.cs

24 "HeliControl" (1.3.1) by Shady (2.97s) - HeliControl.cs

25 "Heli Ride" (1.1.13) by ColonBlow (110.04s) - HeliRide.cs

26 "HitIcon" (1.5.9) by serezhadelaet (1.68s) - HitIcon.cs

27 "Ignore" (2.0.0) by Nogrod (0.06s) - Ignore.cs

28 "Image Library" (2.0.45) by Absolut & K1lly0u (0.84s) - ImageLibrary.cs

29 "InfoPanel" (0.9.8) by Ghosst / Nogrod (43.83s) - InfoPanel.cs

30 "InstantCraft" (1.2.3) by Vlad-00003 (1.36s) - InstantCraft.cs

31 "Inventory Viewer" (3.0.3) by Mughisi (0.29s) - InventoryViewer.cs

32 "KDRGui" (2.0.1) by Ankawi/LaserHydra (9.82s) - KDRGui.cs

33 "Kill Feed" (1.17.0) by Tuntenfisch (3.98s) - KillFeed.cs

34 "Kits" (3.2.92) by Reneb (20.45s) - Kits.cs

35 "Loading Messages" (1.0.4) by VVoid (3.34s) - LoadingMessages.cs

36 "NoEscape" (2.0.92) by Calytic (2.14s) - NoEscape.cs

37 "NoGiveNotices" (0.1.0) by Wulf/lukespragg (0.01s) - NoGiveNotices.cs

38 "NoWorkbench" (0.1.50) by k1lly0u (1.51s) - NoWorkbench.cs

39 "NTeleportation" (1.0.26) by Nogrod (22.33s) - NTeleportation.cs

40 "OnScreenLogo" (1.1.5) by Vlad-00003 (0.21s) - OnScreenLogo.cs

41 "PermissionsManager" (0.0.9) by Steenamaroo (0.02s) - PermissionsManager.cs

42 "PlayerAdministration" (1.3.6) by ThibmoRozier (0.01s) - PlayerAdministration.cs

43 "Private Messages" (0.4.0) by PaiN (0.24s) - PrivateMessages.cs

44 "QuickSmelt" (4.0.5) by Wulf/Jake-Rich (1.93s) - QuickSmelt.cs

45 "RemoverTool" (4.2.10) by Reneb/Fuji (1.64s) - RemoverTool.cs

46 "Rename" (0.3.0) by Wulf/lukespragg (0.01s) - Rename.cs

47 "Rewards" (1.3.14) by Tarek (1.59s) - Rewards.cs

48 "Rules GUI" (1.4.9) by PaiN (0.05s) - RulesGUI.cs

49 "ServerRewards" (0.4.65) by k1lly0u (2.21s) - ServerRewards.cs

50 "Sign Artist" (1.1.2) by Mughisi (0.01s) - SignArtist.cs

51 "SkinBox" (1.12.8) by FuJiCuRa (0.05s) - SkinBox.cs

52 "StacksExtended" (1.3.1) by Fujikura (9.63s) - StacksExtended.cs

53 "Timed Permissions" (1.3.2) by LaserHydra (0.05s) - TimedPermissions.cs

54 "TimeOfDay" (2.3.2) by Fujikura (0.01s) - TimeOfDay.cs

55 "Tipster" (1.3.11) by Fujikura (10.31s) - Tipster.cs

56 "Trade" (1.2.1) by Calytic/rustservers.io (0.32s) - Trade.cs

57 "UpLifted" (1.2.2) by FuJiCuRa (85.48s) - UpLifted.cs

58 "Vanish" (0.5.5) by Wulf/lukespragg (maintained by Jake_Rich) (264.52s) - Vanish.cs

59 "Voice Mute" (1.0.2) by Tori1157 (0.01s) - VoiceMute.cs

60 "WellFed" (1.1.5) by ColonBlow (0.02s) - WellFed.cs

61 "ZLevelsRemastered" (2.9.5) by FuJiCuRa (18.57s) - ZLevelsRemastered.cs

62 "ZoneManager" (2.5.8) by Reneb / Nogrod (91.63s) - ZoneManager.cs

63 SteamGroups - Unloaded

AutoCodeLock, BlockStashPlacement, DynamicCupShare, KDRGui, Kill Feed. Try to unload them!
Again lagging when someone dead and entered game
In response to Talha ():
Again lagging when someone dead and entered game
You can always unload all plugins and die, load 1 suspected plugin and die, ... until you won't find a plugin that causes your lags
Do not listen to anyone, this is a problem of many servers after the latest updates, I and a few friends encountered the same problem, they have low FPS without plugins, and often at the building time 
How i fix this

Merged post

I Changed the CPU (I7 6700K) but it still lagging sometimes, i make the fps limit 800 and server fps mostly 700-750 but sometimes 10-20 ( 73K Entity, 15, Tickrate: 30) my plugin list is;

01 "Admin Chat" (1.3.0) by LaserHydra (0.06s) - AdminChat.cs

02 "AlphaLoot" (2.4.14) by FuJiKuRa (3.17s) - AlphaLoot.cs

03 "AutoCodeLock" (2.2.3) by FuJiCuRa (58.42s) - AutoCodeLock.cs

04 "AutoDoors" (3.1.2) by Wulf/lukespragg (4.52s) - AutoDoors.cs

05 "Better Chat" (5.0.19) by LaserHydra (17.89s) - BetterChat.cs

06 "BetterChatFilter" (1.2.1) by Kinesis (1.72s) - BetterChatFilter.cs

07 "Better Chat Mentions" (1.2.1) by Death and PsychoTea (0.10s) - BetterChatMentions.cs

08 "BetterChatIgnore" (1.0.2) by Togoshige (0.43s) - BetterChatIgnore.cs

09 "BetterChat Mute" (1.1.2) by LaserHydra (0.49s) - BetterChatMute.cs

10 "BetterLoot" (2.15.0) by FuJiCuRa / dcode (39.79s) - BetterLoot.cs

11 "Better Say" (3.0.0) by LaserHydra (0.53s) - BetterSay.cs

12 "BGrade" (1.0.49) by Ryan (71.53s) - BGrade.cs

13 "BlockStashPlacement" (1.0.2) by Flaymar (2.28s) - BlockStashPlacement.cs

14 "CarCommanderLite" (0.1.0) by k1lly0u (31.32s) - CarCommanderLite.cs

15 "Clans" (2.12.8) by FuJiCuRa (22.05s) - Clans.cs

16 "Chopper Tracker" (1.6.7) by Smoosher (14.05s) - CoptorTracker.cs

17 "CustomChatCommands" (2.1.1) by PsychoTea (0.59s) - CustomChatCommands.cs

18 "DiscordMessages" (1.8.8) by Slut (1.09s) - DiscordMessages.cs

19 "DynamicCupShare" (2.5.8) by Fujikura (375.36s) - DynamicCupShare.cs

20 "External Wall Protect" (1.0.3) by redBDGR (0.95s) - ExternalWallProtect.cs

21 "FancyDrop" (2.7.8) by FuJiCuRa (47.41s) - FancyDrop.cs

22 "Gathering Manager" (2.2.6) by Mughisi (1.25s) - GatherManager.cs

23 "GUIAnnouncements" (1.23.83) by JoeSheep (151.66s) - GUIAnnouncements.cs

24 "HeliControl" (1.3.1) by Shady (10.60s) - HeliControl.cs

25 "Heli Ride" (1.1.13) by ColonBlow (421.70s) - HeliRide.cs

26 "HighWallBarricades" (1.0.1) by Guilty Spark (1.13s) - HighWallBarricades.cs

27 "HitIcon" (1.5.9) by serezhadelaet (8.92s) - HitIcon.cs

28 "Ignore" (2.0.0) by Nogrod (0.34s) - Ignore.cs

29 "Image Library" (2.0.45) by Absolut & K1lly0u (0.91s) - ImageLibrary.cs

30 "InfoPanel" (0.9.8) by Ghosst / Nogrod (153.22s) - InfoPanel.cs

31 "InstantCraft" (1.2.3) by Vlad-00003 (6.45s) - InstantCraft.cs

32 "Admin / Player Inventory Cleaner" (1.5.0) by TheDoc - Uprising Servers (0.03s) - InventoryCleaner.cs

33 "Inventory Viewer" (3.0.3) by Mughisi (1.33s) - InventoryViewer.cs

34 "KDRGui" (2.0.1) by Ankawi/LaserHydra (25.19s) - KDRGui.cs

35 "Kits" (3.2.92) by Reneb (5.57s) - Kits.cs

36 "Loading Messages" (1.0.4) by VVoid (40.32s) - LoadingMessages.cs

37 "NoEscape" (2.0.92) by Calytic (12.47s) - NoEscape.cs

38 "No Give Notices" (0.2.0) by Wulf/lukespragg (0.01s) - NoGiveNotices.cs

39 "NoWorkbench" (0.1.50) by k1lly0u (128.80s) - NoWorkbench.cs

40 "NTeleportation" (1.0.26) by Nogrod (52.95s) - NTeleportation.cs

41 "OnScreenLogo" (1.1.5) by Vlad-00003 (0.98s) - OnScreenLogo.cs

42 "PermissionsManager" (0.0.9) by Steenamaroo (1.17s) - PermissionsManager.cs

43 "PlayerAdministration" (1.3.6) by ThibmoRozier (0.03s) - PlayerAdministration.cs

44 "Private Messages" (0.4.0) by PaiN (0.90s) - PrivateMessages.cs

45 "QuickSmelt" (4.0.5) by Wulf/Jake-Rich (9.04s) - QuickSmelt.cs

46 "RemoverTool" (4.2.10) by Reneb/Fuji (9.97s) - RemoverTool.cs

47 "Rename" (0.3.0) by Wulf/lukespragg (0.03s) - Rename.cs

48 "Rewards" (1.3.14) by Tarek (6.59s) - Rewards.cs

49 "Rules GUI" (1.4.9) by PaiN (0.08s) - RulesGUI.cs

50 "ServerRewards" (0.4.65) by k1lly0u (12.83s) - ServerRewards.cs

51 "Sign Artist" (1.1.2) by Mughisi (0.10s) - SignArtist.cs

52 "SkinBox" (1.12.8) by FuJiCuRa (0.98s) - SkinBox.cs

53 "StacksExtended" (1.3.1) by Fujikura (25.07s) - StacksExtended.cs

54 "Steam Groups" (0.4.1) by Wulf/lukespragg (1.56s) - SteamGroups.cs

55 "Timed Permissions" (1.3.2) by LaserHydra (0.29s) - TimedPermissions.cs

56 "TimeOfDay" (2.3.2) by Fujikura (0.02s) - TimeOfDay.cs

57 "Tipster" (1.3.11) by Fujikura (17.95s) - Tipster.cs

58 "Trade" (1.2.1) by Calytic/rustservers.io (1.96s) - Trade.cs

59 "UpLifted" (1.2.2) by FuJiCuRa (228.20s) - UpLifted.cs

60 "Vanish" (0.7.2) by nivex (1182.37s) - Vanish.cs

61 "WellFed" (1.1.5) by ColonBlow (0.12s) - WellFed.cs

62 "ZLevelsRemastered" (2.9.5) by FuJiCuRa (20.38s) - ZLevelsRemastered.cs

63 "Death Notes" (6.1.0) by LaserHydra (91.98s) - DeathNotes.cs

64 "Popup Notifications" (0.2.0) by emu / k1lly0u (10.55s) - PopupNotifications.cs

65 "Death Notes GUI" (1.0.0) by LaserHydra (10.58s) - DeathNotesGui.cs

66 "Spectate" (0.4.3) by Wulf/lukespragg (0.07s) - Spectate.cs

67 "IP Logger" (1.0.0) by redBDGR (0.26s) - IPLogger.cs

68 "Admin Radar" (4.5.3) by nivex (13.00s) - AdminRadar.cs

hi there, 
i had this spike lag , fps when one new player connected from noworkbrench plugin or blueprint
i unloaded all plugins but it still lagging
Try to rename plugins folder to plugins1 for example and reload your server. If the server still lags, your problem is not caused by plugins.
Please help me when someone entered game or killed fps is 10-20 but normal fps is 700-750 (fps limit 850) server cpu is i7 6700k