Question Low FPS in Minecraft ?

Sep 9, 2021
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Hi,
I am getting around 20fps with the occasional drop to 0fps in Minecraft in my world inside the city area and around 100fps out in the unbuilt areas,
I have an:

MSI GL65 9SEK Laptop
144Hz Monitor
Intel Core i7 9-9750H,
NVIDIA GeForce RTX 2060,
16GB of RAM (10GB is allocated to Minecraft).

I have 23 mods installed and of those 23, 1 is OptiFine. Previously I have been able to get up to 400FPS even with around 23 mods.
 
Last edited:
Hi,
I am getting around 20fps with the occasional drop to 0fps in Minecraft in my world inside the city area and around 100fps out in the unbuilt areas,
I have an MSI GL65 9SEK Laptop with a 144Hz Monitor and Intel Core i7 9-9750H, NVIDIA GeForce RTX 2060, 16GB of RAM (10GB is allocated to Minecraft)... I have 23 mods installed and of those 23, 1 is OptiFine. Previously I have been able to get up to 400FPS even with around 23 mods.
what are the jvm arguments?
 
Same Version, Forge 1.12.2
i think you need to delete JavaCheck.jar in C:\Program Files (x86)\Minecraft Launcher\game, then set the java executable to C:\Program Files\Java\jre1.8.0_301\bin\javaw.exe

and the executables to
-Xmx10G -Xms10G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -XX:+DisableExplicitGC -Dsun.rmi.dgc.server.gcInterval=2147483646

10GBs is alot for 16gbs of ram, you might want to set the xmx and xms to 8gbs.
 
Sep 9, 2021
6
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10
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so I have set JVM Arguments to -Xmx8G -Xms8G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -XX:+DisableExplicitGC -Dsun.rmi.dgc.server.gcInterval=2147483646 but not sure how to do the executable change.
 
so I have set JVM Arguments to -Xmx8G -Xms8G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M -XX:+DisableExplicitGC -Dsun.rmi.dgc.server.gcInterval=2147483646 but not sure how to do the executable change.
just click Browse and navigate to the directory i told. You did install java 8 64 bit right?
 

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