Minecraft Forums

post the argument you are using to allocate more ram

Quote from minecrafter1103»

-Xmx16G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=16M -Xmn16G

Those are my arguements.

Here are the mods in case the problems are because of them.

Mod 1:AbyssalCraft| Version 1.12.2-1.9.4.9|
Mod 1:Actually Additions| Version 1.12.2-r126|
Mod 1:Actually Baubles| Version 1.1|
Mod 1:Aether II| Version 1.12.2-1.0.5|
Mod 1:Animania| Version 1.4.8", "mcversion" : "1.12.2|
Mod 1:Apple Core| Version 1.12.2|
Mod 1:AppleSkin| Version 1.0.9|
Mod 1:Applied Energistics 2| Version rv5-stable-11|
Mod 1:AutoRegLib| Version 1.3-17|
Mod 1:Avaritia| Version 3.2.0.13|
Mod 1:Baubles| Version 1.12-1.5.2|
Mod 1:BD Lib| Version 1.14.3.12|
Mod 1:Better Builder's Wands| Version 0.11.1|
Mod 1:Better FPS| Version 1.12.2|
Mod 1:BiblioCraft| Version 2.4.4|
Mod 1:Biomes O' Plenty| Version 7.0.1|
Mod 1:Bookshelf| Version 2.3.544|
Mod 1:Botania| Version r1.10-354|
Mod 1:Brandon's Core| Version 1.12-2.4.2.157
Mod 1:Buildcraft| Version 7.99.16
Mod 1:Buildcraft factory| Version 7.1.21
Mod 1:Buildcraft Silicon| Version 7.1.22
Mod 1:BC Robotics| Version 7.99.16-00282663b809|
Mod 1:Chisel| Version MC1.12-0.1.1.24|
Mod 1:Chisels & Bits| Version 14.11|
Mod 1:CodeChicken Lib| Version 3.1.8.341|
Mod 1:CoFH Core| Version 4.5.0.16|
Mod 1:CoFH World| Version 1.2.0.5|
Mod 1:CraftStudio API| Version 1.0.0|
Mod 1:CraftTweaker2| Version 1.12-4.0.10|
Mod 1:CTM| Version MC1.12-0.2.3.12|
Mod 1:Cucumber Library| Version 1.1.0|
Mod 1:DrZhark's CustomSpawner| Version 3.11.3|
Mod 1:Cyclic| Version 1.15.6|
Mod 1:Dark Utilities| Version 1.8.207|
Mod 1:Doggy Talents| Version 1.14.2.317|
Mod 1:Draconic Evolution| Version 1.12-2.3.11.290|
Mod 1:EluLib| Version 0.1.11|
Mod 1:EmberRoot Zoo| Version 1.3.7|
Mod 1:EnderCore| Version 1.12.2-0.5.30|
Mod 1:Ender IO Machines| Version 5.0.25|
Mod 1:Extra Planets| Version 1.12.2-0.3.8|
Mod 1:Extra Utilities 2| 1.12.2 - 1.7.6|
Mod 1:Familiar Fauna| Version 1.0.10|
Mod 1:Flux Networks| Version 1.12.2-3.0.11|
Mod 1:Forestry| Version 5.8.0.295|
Mod 1:Shadowfacts' Forgelin| Version 1.6.0|
Mod 1:MrCrayfish's Furniture Mod| Version 4.2.0|
Mod 1:Galacticraft Planets| Version 4.0.1.177
Mod 1:Galacticraft Core| Version 4.0.1.177
Mod 1:Advanced Generators| Version 0.9.20.12|
Mod 1:Grue| Version 1.12-1.3.5|
Mod 1:Waila| Version 1.8.24|
Mod 1:Ice and Fire| Version 1.4.0|
Mod 1:iChunUtil| Version 1.12.2-7.1.4| By:null|
Mod 1:Immersive engineering| Version 0.12-82|
Mod 1:Immersive Engineering core| Version 0.12-82|
Mod 1:Immersive Petroleum| Version 1.1.5|
Mod 1:Immersive Tech| Version 1.3.9|
Mod 1:Inventory Tweaks| Version 1.63+release.109.220f184|
Mod 1:Iron Backpacks| Version 1.12.2-3.0.8-12|
Mod 1:Just Enough Items| Version 4.9.1.170|
Mod 1:JourneyMap| Version 1.12.2-5.5.2|
Mod 1:LLibrary| Version 1.7.9-1.12.2|
Mod 1:MalisisCore| Version 1.12.2-6.4.0|
Mod 1:MalisisDoors| Version 1.12.2-7.3.0|
Mod 1:Mantle| Version 1.3.2.24|
Mod 1:Minecraft Comes Alive| Version 1.12.2-5.3.1|
Mod 1:McJtyLib| Version 1.12-2.6.7-SNAPSHOT|
Mod 1:Mekanism| Version 1.12.2-9.4.10.345|
Mod 1:MekanismGenerators| Version 1.12.2-9.4.10.345|
Mod 1:MekanismTools| Version 1.12.2-9.4.10.345|
Mod 1:Micdoodle core| Version 1.12.2-4.0.1.177|
Mod 1:MJRLegendsLib| Version 1.12.2-1.1.4|
Mod 1:DrZhark's Mo'Creatures Mod| Version 12.0.3|
Mod 1:Mystical Agradditions| Version 1.2.8|
Mod 1:Mystical Agriculture| Version 1.6.10|
Mod 1:Natura| Version 1.12-4.3.0.23|
Mod 1:Nature's Compass| Version 1.12.2-1.5.0|
Mod 1:NotEnoughIDs| Version 1.5.4.2|
Mod 1:Optifine| Version 1.12.2|
Mod 1:Orbis API| Version 1.12.2-1.1.2|
Mod 1:p455w0rdslib| Version 1.12.2|
Mod 1:Pam's HarvestCraft| Version 1.12a|
Mod 1:Placeable Items Mod| Version 3.3|
Mod 1:PortalGun| Version 1.12.2-7.0.2|
Mod 1:Quark| Version r1.4-123|
Mod 1:RadixCore| Version 1.12.2-2.2.1|
Mod 1:Random Things| Version 4.0.8|
Mod 1:Realm Of The Dragons| Version 1.4|
Mod 1:Reborn Core| Version 3.8.5.290|
Mod 1:RebornStorage| Version 3.1.0.50|
Mod 1:Redstone Arsenal| Version 2.5.1.13|
Mod 1:Redstone Flux| Version 2.0.2.3|
Mod 1:Refined Storage| Version 1.5.34|
Mod 1:Reliquary| Version 1.12.2-1.3.4.763|
Mod 1:RFTools| Version 1.12-7.33|
Mod 1:RFTools Dimensions| Version 1.12-5.53|
Mod 1:Silent Lib| Version 2.3.1|
Mod 1:Silent's Gems| Version 2.7.2|
Mod 1:Simply Jetpacks 2| Version 2.2.5.39|
Mod 1:SonarCore| Version 1.12.2-5.0.10|
Mod 1:The Spice of Life| Version 1.3.11|
Mod 1:Tinkers' Construct| Version 1.12.2-2.10.1.84|
Mod 1:Techguns Core| Version 1.0| By:null|
Mod 1:Tech Reborn| Version 2.15.10.677|
Mod 1:TESLA| Version 1.0.63|
Mod 1:Thaumcraft| Version 1.12.2-6.1.BETA13|
Mod 1:The Beneath| Version 1.12.2-1.4.1|
Mod 1:Thermal Cultivation| Version 0.3.0.7|
Mod 1:Thermal Dynamics| Version 2.5.0.12|
Mod 1:Thermal Expansion| Version 5.5.0.29|
Mod 1:Thermal Foundation| Version 2.5.0.18|
Mod 1:Thermal Innovation| Version 0.3.0.7|
Mod 1:Tough As Nails| Version 3.1.0|
Mod 1:Tough Expansion| Version 1.12-3.4.24|
Mod 1:Tropicraft| Version 7.1.4.78|
Mod 1:The Twilight Forest| Version 3.6.398|
Mod 1:UniDict| Version 1.12.2-2.5c|
Mod 1:WanionLib| Version 1.12.2-1.5|
Mod 1:What Are We Looking At| Version 2.5.253|
Mod 1:Wolf Armor and Storage| Version 1.12.2-2.1.0.24-RELEASE|
Mod 1:WorldEdit| Version 6.1.8-SNAPSHOT;cd4729f|

Quote from Gameknight6916»

That's a LOT of mods. You could even try to increase the 16 to a 20.

16 is plenty, if not too much for that many mods, only 120 odd there, thats a medium modpack size, 4 would be enough really