I've knocked it down to using only one core for the sake of everything else that's running, hence it not being able to hit an even higher number. There's only 15,624 bricks at the time of this post, I don't think that would cause a major issue.
I've done /cancelAllEvents as well.
$AddOn__Bot_Blockhead = 1;
$AddOn__Bot_Hole = 1;
$AddOn__Bot_Horse = 1;
$AddOn__Bot_Shark = 1;
$AddOn__Bot_Zombie = 1;
$AddOn__Brick_1RandomPack = 1;
$AddOn__Brick_Arch = 1;
$AddOn__Brick_Checkpoint = 1;
$AddOn__Brick_Christmas_Tree = 1;
$AddOn__Brick_Deletion = 1;
$AddOn__Brick_DemiansBB = 1;
$AddOn__Brick_DemiansBB2 = 1;
$AddOn__Brick_DemiansBB3 = 1;
$AddOn__Brick_DetailTrees = 1;
$AddOn__Brick_Doors = 1;
$AddOn__Brick_ExtraArches = 1;
$AddOn__Brick_ExtraRamps = 1;
$AddOn__Brick_Fence = 1;
$AddOn__Brick_ForestTree = 1;
$AddOn__Brick_Glass = 1;
$AddOn__Brick_Halfbrick = 1;
$AddOn__Brick_Halloween = 1;
$AddOn__Brick_InvertedCorners = 1;
$AddOn__Brick_Large_Cubes = 1;
$AddOn__Brick_Log = 1;
$AddOn__Brick_ModTer_BasicPack = 1;
$AddOn__Brick_ModTer_InvertedPack = 1;
$AddOn__Brick_Poster_8x = 1;
$AddOn__Brick_Round_Corners = 1;
$AddOn__Brick_ShortRangeMusic = 1;
$AddOn__Brick_SmallRampsPack = 1;
$AddOn__Brick_Sphere = 1;
$AddOn__Brick_Stairs = 1;
$AddOn__Brick_Teledoor = 1;
$AddOn__Brick_Treasure_Chest = 1;
$AddOn__Brick_V15 = 1;
$AddOn__Brick_Wedge = 1;
$AddOn__Brick_WedgePlus = 1;
$AddOn__Brick_WedgePrint = 1;
$AddOn__Brick_Window = 1;
$AddOn__Brick_Window_Prints = 1;
$AddOn__Brick_Zones = 1;
$AddOn__Emote_Alarm = 1;
$AddOn__Emote_Confusion = 1;
$AddOn__Emote_Hate = 1;
$AddOn__Emote_Love = 1;
$AddOn__Event_addRelativeVelocity = 1;
$AddOn__Event_Camera = 1;
$AddOn__Event_Camera_Control = 1;
$AddOn__Event_FireAtBrick = 1;
$AddOn__Event_FollowPlayer = 1;
$AddOn__Event_MessageBoxOK = 1;
$AddOn__Event_Minigame = 1;
$AddOn__Event_onAltActivate = 1;
$AddOn__Event_OnBotTouched = 1;
$AddOn__Event_onPlayerEnterVehicle = 1;
$AddOn__Event_onRapidActivate = 1;
$AddOn__Event_playSound = 1;
$AddOn__Event_Print = 1;
$AddOn__Event_PromptEvents = 1;
$AddOn__Event_setDamageFlash = 1;
$AddOn__Event_setEventTimeout = 1;
$AddOn__Event_setPlayerTransform = 1;
$AddOn__Event_SetPrintText = 1;
$AddOn__Event_SetRandomPrintNum = 1;
$AddOn__Event_Sit = 1;
$AddOn__Event_spawnHomingProjectile = 1;
$AddOn__Event_Tumble = 1;
$AddOn__Event_Variables = 1;
$AddOn__Event_Vehicle = 1;
$AddOn__Event_Zones = 1;
$AddOn__Item_Key = 1;
$AddOn__Item_Skis = 1;
$AddOn__Item_Sports = 1;
$AddOn__Light_Ambient = 1;
$AddOn__Light_Animated = 1;
$AddOn__Light_Basic = 1;
$AddOn__Light_Eksi = 1;
$AddOn__Light_Orb = 1;
$AddOn__Light_Small = 1;
$AddOn__Light_ZSNO = 1;
$AddOn__Particle_AdvancedLasers = 1;
$AddOn__Particle_Basic = 1;
$AddOn__particle_CasualBuild = 1;
$AddOn__Particle_FlowerPetals = 1;
$AddOn__particle_FoggyBuild = 1;
$AddOn__Particle_FX_Cans = 1;
$AddOn__Particle_Grass = 1;
$AddOn__Particle_Player = 1;
$AddOn__Particle_Prepper = 1;
$AddOn__Particle_Smoke = 1;
$AddOn__Particle_Tools = 1;
$AddOn__Particle_WaterColor = 1;
$AddOn__particle_WeatherBuild = 1;
$AddOn__Player_Fuel_Jet = 1;
$AddOn__Player_Jump_Jet = 1;
$AddOn__Player_Leap_Jet = 1;
$AddOn__Player_No_Jet = 1;
$AddOn__Player_Quake = 1;
$AddOn__Print_1x1_Checkered = 1;
$AddOn__Print_1x1_Default = 1;
$AddOn__Print_1x1f_DefaultPlus = 1;
$AddOn__Print_1x1f_DemiansArrows = 1;
$AddOn__Print_1x1f_v9buttons = 1;
$AddOn__Print_1x2f_BLPRemote = 1;
$AddOn__Print_1x2f_Default = 1;
$AddOn__Print_1x2f_DefaultPlus = 1;
$AddOn__Print_1x2f_ExtendedBlanks = 1;
$AddOn__Print_2x2f_Checkered = 1;
$AddOn__Print_2x2f_Default = 1;
$AddOn__Print_2x2f_ExtendedBlanks = 1;
$AddOn__Print_2x2f_MiniRoads = 1;
$AddOn__Print_2x2f_MoreDefault = 1;
$AddOn__Print_2x2r_Checkered = 1;
$AddOn__Print_2x2r_Default = 1;
$AddOn__Print_2x2r_Monitor3 = 1;
$AddOn__Print_2x2r_MoreDefault = 1;
$AddOn__Print_Letters_Default = 1;
$AddOn__Print_Letters_Extra = 1;
$AddOn__Print_ModTer_Default = 1;
$AddOn__Print_Poster_Tutorial = 1;
$AddOn__Projectile_GravityRocket = 1;
$AddOn__Projectile_Pinball = 1;
$AddOn__Projectile_Pong = 1;
$AddOn__Projectile_Radio_Wave = 1;
(not any of these, I've double checked my stuff to make sure)
$AddOn__Server_ArcadeSupport = 1;$AddOn__Server_Eval = 1;$AddOn__Server_MPDNotif = 1;$AddOn__Server_RemoteSupport = 1;$AddOn__Server_Whitelist = 1;$AddOn__Sound_Access = 1;
$AddOn__Sound_BANSounds = 1;
$AddOn__Sound_Bass = 1;
$AddOn__Sound_Beeps = 1;
$AddOn__Sound_Blockland = 1;
$AddOn__Sound_ButtonPack = 1;
$AddOn__Sound_Cash_Register = 1;
$AddOn__Sound_ClockDASHTicks = 1;
$AddOn__Sound_GameOverYeah = 1;
$AddOn__Sound_Generic = 1;
$AddOn__Sound_Phone = 1;
$AddOn__Sound_Synth4 = 1;
$AddOn__Sound_UGNSounds = 1;
$AddOn__Support_Doors = 1;
$AddOn__Tool_BricknameGun = 1;
$AddOn__Tool_BrickSelector = 1;
$AddOn__Tool_Duplicator = 1;
$AddOn__Tool_Fill_Can = 1;
$AddOn__Tool_Fill_Printer = 1;
$AddOn__Tool_RPG = 1;
$AddOn__Tool_WaterFX = 1;
$AddOn__Vehicle_Ball = 1;
$AddOn__Vehicle_Flying_Wheeled_Jeep = 1;
$AddOn__Vehicle_Horse = 1;
$AddOn__Vehicle_Jeep = 1;
$AddOn__Vehicle_Magic_Carpet = 1;
$AddOn__Vehicle_Pirate_Cannon = 1;
$AddOn__Vehicle_Rowboat = 1;
$AddOn__Vehicle_Tank = 1;
$AddOn__Weapon_Bow = 1;
$AddOn__Weapon_Gun = 1;
$AddOn__Weapon_Guns_Akimbo = 1;
$AddOn__Weapon_Horse_Ray = 1;
$AddOn__Weapon_Push_Broom = 1;
$AddOn__Weapon_Rocket_Launcher = 1;
$AddOn__Weapon_Spear = 1;
$AddOn__Weapon_Sword = 1;